• WordNet 3.6
    • v castle move the king two squares toward a rook and in the same move the rook to the square next past the king
    • n castle interchanging the positions of the king and a rook
    • n castle a large building formerly occupied by a ruler and fortified against attack
    • n castle (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
    • n castle a large and stately mansion
    • ***

Additional illustrations & photos:

Farnham Castle from the High Street Farnham Castle from the High Street
The Castle Gate, Guildford The Castle Gate, Guildford
The Castle of Monceaux——91 The Castle of Monceaux——91
The Castle of St. Germain in the Reign Of Henry IV.—107 The Castle of St. Germain in the Reign Of Henry IV.—107
The Castle of Fontainbleau——124 The Castle of Fontainbleau——124
Rochester Castle Rochester Castle

Webster's Revised Unabridged Dictionary
  • Interesting fact: The largest LEGO castle that was ever built was built with 400,000 LEGO bricks and was 4.45 m x 5.22 m
    • Castle A fortified residence, especially that of a prince or nobleman; a fortress. "The house of every one is to him castle and fortress, as well for his defense againts injury and violence, as for his repose.""Our castle's strength
      Will laugh a siege to scorn."
    • Castle A piece, made to represent a castle, used in the game of chess; a rook.
    • Castle A small tower, as on a ship, or an elephant's back.
    • Castle Any strong, imposing, and stately mansion.
    • v. i Castle (Chess) To move the castle to the square next to king, and then the king around the castle to the square next beyond it, for the purpose of covering the king.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Spiral staircases in medieval castles are running clockwise. This is because all knights used to be right-handed. When the intruding army would climb the stairs they would not be able to use their right hand which was holding the sword because of the difficulties of climbing the stairs. Left-handed knights would have had no troubles, except left-handed people could never become knights because it was assumed that they were descendants of the devil
    • n castle A building, or series of connected buildings, fortified for defense against an enemy; a fortified residence; a fortress. Castles, in the sense of fortified residences, were an outgrowth or institution of feudalism, and were first brought to a high pitch of strength and completeness by the Normans. In England there were few or no castles, properly speaking, till the time of William the Conqueror, after which a great many were constructed on the Norman model. At first the donjon or keep was the only part of the castle of great strength, and the other buildings in connection with it were of a more or less temporary nature. In the thirteenth century, however, the design of the castle became more fully developed, and the keep formed only the central part of a group of buildings, all supporting one another, and mutually contributing to the strength and commodiousness of the whole. The cut shows the castle of Coucy, near Laon, France, built in the thirteenth century. In the foreground is the outer bailey or esplanade, fortified, and containing a chapel, stables, and other buildings. The outer entrance to this was formed by a barbican or antemural (see plan under antemural). a is the foss, 20 yards broad; b, the gate, approached by two swing-bridges, defended by two guard-rooms, and having a double portcullis within, giving entrance to vaulted guard-rooms with sleeping-apartments, etc., above, c; d, inner bailey or courtyard; e, covered buildings for the men defending the walls or curtains; f, apartments for the family, entered by the grand staircase, g; h, great hall, with storerooms and vaults below; i, donjon or keep (the chapel is seen behind it), the strongest part of the castle, with walls of immense thickness, suited to form the last retreat of the garrison. At k is a postern leading from the donjon and communicating with an outer postern, drawbridge, etc.; l, m, n, o are the chief towers flanking the outer walls.
    • n castle In heraldry, a representation of two or more towers connected by curtains, often having a gateway in one of the curtains, and always embattled. When the towers are represented with the windows and the joints between the stones of colors different from that of the wall, they are said to be masoned or windowed gules, or, or the like. When the windows are shown of the color of the field, the castle is said to be voided of the field, or sometimes ajouré. The door is called the port; if it has a portcullis, this and its color are mentioned in the blazon.
    • n castle The house or mansion of a person of rank or wealth: somewhat vaguely applied, but usually to a large and more or less imposing building.
    • n castle A piece made in the form of a castle, donjon, or tower, used in the game of chess; the rook.
    • n castle A kind of helmet.
    • n castle Nautical, a kind of fighting-tower formerly erected on war-galleys, etc., near the bow and stern, and called respectively forecastle and aftcastle. See cut under cadenas.
    • n castle Synonyms See fortification.
    • castle In chess, to move the king from his own square two squares to the right or left, and bring the rook or castle to the square the king has passed over. Castling is allowed only when neither the king nor the castle has moved, when there is no piece between them, and when the king is not in check and does not, in castling, move over or to a square which is attacked by an enemy's man, that is, through or into check.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: The youngest actress to be nominated as best actress is Keisha Castle-Hughes who was nominated at just 13 years old
    • n Castle kas′l a fortified house or fortress: the residence of a prince or nobleman, or a large country mansion generally: anything built in the likeness of such: a defensive tower borne on an elephant's back: a large ship, esp. of war
    • v.t Castle to enclose or fortify with a castle
    • v.i Castle (chess) to bring the castle or rook up to the square next the king, and move the king to the other side of the castle
    • ***


  • John Bunyan
    “There was a castle called Doubting Castle, the owner whereof was Giant Despair.”
  • Henrik Ibsen
    “Castles in the air - -they are so easy to take refuge in. And so easy to build as well.”
  • Henry David Thoreau
    “If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.”
  • Bible
    “A brother offended is harder to be won than a strong city: and their contentions are like the bars of a castle. [Proverbs 18:19]”
  • Alexander Chase
    Alexander Chase
    “A man's home is his wife's castle.”
  • Clare Boothe Luce
    “A man's home may seem to be his castle on the outside; inside, it is more often his nursery.”


An Englishman's home is his castle - (UK) This means that what happens in a person's home or private life is their business and should not be subject to outside interference.
Castles in the air - Plans that are impractical and will never work out are castles in the air.
King of the castle - The king of the castle is the person who is in charge of something or in a very comfortable position compared to their companions.


Webster's Revised Unabridged Dictionary
AS. castel, fr. L. castellum, dim. of castrum, a fortified place, castle


In literature:

And then the youth left the dragon's castle.
"The Chinese Fairy Book" by Various
When the second reached the Castle it fell into the hands of the Marchioness.
"Marion Fay" by Anthony Trollope
Chapel in the Castle at Caen 48 49.
"Architectural Antiquities of Normandy" by John Sell Cotman
The mediaeval city formed a triangle on the north-west slope of the castle.
"The Shores of the Adriatic" by F. Hamilton Jackson
Rachel therefore was not to be brought to the Castle while Frank was there.
"The Landleaguers" by Anthony Trollope
I allude to Dunrobin Castle in Sutherland, and St. Michael's Mount in Cornwall.
"Memoirs of Life and Literature" by W. H. Mallock
She was tired of her father's promises and castles in the air, which usually ended in bitter disappointment.
"Fairy Tales from the German Forests" by Margaret Arndt
On the fifth day after the castle had been taken, a galley came over from Gorumna Castle bearing news.
"Nuala O'Malley" by H. Bedford-Jones
On yonder hill she can see the dark frowning castle, whence a thousand harms may come upon her.
"La Sorcière: The Witch of the Middle Ages" by Jules Michelet
The Westovers have some very nice people coming to the Castle, and are going to get up some theatricals.
"A Monk of Cruta" by E. Phillips Oppenheim

In poetry:

Whether I am in castle or inn,
With sinner or saint,
Never can I a woman win,—
I am but a priest!
"The Abbot Of Unreason" by Elizabeth Drew Barstow Stoddard
"Oh, ah! - indeed - I see,"
The troubadour exclaimed -
"If I may make so free,
How is this castle named?
"The Troubadour" by William Schwenck Gilbert
He did not die; but ever
Waits in the chamber deep,
Where hidden under the castle
He sat himself to sleep.
"Barbarossa" by Friedrich Ruckert
And in the castle of Tyntagill
King Uther mee begate,
Of Agyana, a bewtyous ladye,
And come of hie estate.
"The Legend of King Arthur" by Thomas Percy
Until at last a castle lay
Beneath the moon, among the trees;
Its Gothic towers old and gray
With mysteries.
"Morgan le Fay" by Madison Julius Cawein
You remember how a chance,
Somewhat like to mine, one June
Happened him at castle Toune,
Over there in France?
"One Day And Another: A Lyrical Eclogue – Part II" by Madison Julius Cawein

In news:

A Castle by the Sea, Goethe in Hollywood, and L.A. On September 8, 2011 3:00 PM.
For some reason, we're envisioning a Santa Claus role-playing fantasy, but in a castle.
It was originally called the Gordon Castle Setter.
Enter to Win a seat on the Outlets at Castle Rock Party Bus.
NEW CASTLE — A program on custody laws specific to grandparents raising grandchildren will be held Monday at Third Presbyterian Church.
Dennis Nett / The Post-Standard Jim Castle stands next to a pool table he recently restored.
The table was made by his great-grandfather , Charles L Castle, a pool-table manufacturer in Syracuse in the 1800s.
Watch Gresham , Oregon vs New Castle, Indiana (Double Elimination) live online now at WatchESPN or check out the full replay if you missed it.
Grotto Pizza is a Restaurant Chain in Rehoboth Beach, Newark, Wilmington, Lewes and Milford in New Castle, Kent and Sussex County.
Lots of hail and high winds and rain in Castle Creek.
If there was one race on the AMA Grand National Championship schedule that Sammy Halbert had circled, it was the Castle Rock TT.
Why else would he procrastinate going home by eating an entire sack of White Castle.
Herr died defending his "castle" on the night of Aug 17.
Musical Voices Maui will present "The Creation" by Franz Joseph Haydn on Sunday, Aug 19, at 3:30 pm in the Maui Arts & Cultural Center's Castle Theater.
He-Man action figure contest winner Daniel Benedict designed Castle Grayskullman.

In science:

The well known question of where is more order, in a fine castle or in a pile of stones, has a profound answer: It depends on which pile you mean.
Geometry of irreversibility: The film of nonequilibrium states
Jung, Unintegrated parton densities applied to heavy quark production in the CCFM approach, in Proceedings of the Rinberg workshop on ”New trends in HERA physics”, Ringberg Castle, Tegernsee, Germany. (2001), hep-ph/0109146. 135. H.
Small x Phenomenology: Summary and status 2002
This at an intermediate stage came out as a search engine, and indeed we are planning to develop one to seek out and destroy both medieval castles and medieval cosmologies (i.e., all but one of those mentioned in this section).
Astrophysics in 2006
Following ORM, our first lens sample is primarily drawn from the CASTLES (Mu˜noz et al. 1998) data base3 which, at present, contains 82 class ’A’ (certain), 10 class ’B’ (likely), and 8 class ’C’ (dubious) gravitational lenses, making for a total sample size of 100 systems.
How robust are the constraints on cosmology and galaxy evolution from the lens-redshift test?
We ignore the 13 class ’B’ binary quasars from the CASTLES lists, eight of which have image separations greater than 4′′ and would be discarded as likely being cluster-assisted rather than due to field galaxies.
How robust are the constraints on cosmology and galaxy evolution from the lens-redshift test?