• St. Castor, Coblenz
    St. Castor, Coblenz
  • WordNet 3.6
    • n Castor type genus of the Castoridae: beavers
    • n castor a hat made with the fur of a beaver (or similar material)
    • n castor a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable
    • n castor a shaker with a perforated top for sprinkling powdered sugar
    • n Castor a multiple star with 6 components; second brightest in Gemini; close to Pollux
    • ***

Additional illustrations & photos:

Léonce and Castor struggle with the wolf Léonce and Castor struggle with the wolf

Webster's Revised Unabridged Dictionary
  • Interesting fact: Castor Oil®™ is used as a lubricant in jet planes.
    • Castor (Zoöl) A genus of rodents, including the beaver. See Beaver.
    • Castor A hat, esp. one made of beaver fur; a beaver. "I have always been known for the jaunty manner in which I wear my castor ."
    • Castor A heavy quality of broadcloth for overcoats.
    • n Castor (Min) A variety of the mineral called petalite, from Elba.
    • Castor Castoreum. See Castoreum.
    • n Castor See Caster, a small wheel.
    • n Castor (Astron) the northernmost of the two bright stars in the constellation Gemini, the other being Pollux.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Ricin is a protein produced by the castor oil plant, Ricinus communis, which is highly toxic (the minimal lethal dose is around 1 µg / kg body weight, that means 1/15th of a milligram could kill a 150 lb. person). Ricin can be a dangerous contaminant, making the production of castor oil a precisely controlled process.
    • n castor A beaver.
    • n castor Among French Canadians, one of the party which called itself the national party, the beaver being the national emblem of Canada.
    • n castor A genus of sciuromorphic rodent mammals, typical of the family Castoridæ. The type and only living representative is the beaver, Castor fiber, of aquatic habits, having the feet 4-toed, the fore feet small, the hinder large, webbed, with the second toe double-clawed; the tail broad, flat, oval, naked, and scaly; and the body thick-set, especially behind. On each side, above and below, the incisors are 1, canines 0, premolars 1, and molars 3, making 20 teeth in all. The skull resembles that of the Sciuridæ, but lacks postorbital processes. See beaver.
    • n castor A beaver hat; by extension, a silk hat.
    • n castor A heavy quality of broadcloth used for overcoats.
    • castor Made of beaver-skin or -fur, or of the cloth called beaver.
    • n castor A reddish-brown substance consisting of the preputial follicles of the beaver and their contents, dried and prepared for commercial purposes. It has a strong, penetrating, enduring odor, and was formerly of high repute in medicine, but is now used chiefly by perfumers.
    • n castor A mineral found in the island of Elba associated with another called pollux. It is a silicate of aluminium and lithium, and probably a variety of petalite. It is colorless and transparent, with a glistening luster. Also called castorite.
    • n castor See caster, 3.
    • n castor Glove-leather made from goat-skins. The grain of the skin is removed and it is given a very soft finish, usually gray in color.
    • ***
Chambers's Twentieth Century Dictionary
    • n Castor kas′tor the beaver: a hat made of its fur.
    • n Castor kast′or a small wheel on the legs of furniture: a small vessel with perforated top for pepper, &c
    • Castor also Cast′er
    • ***


  • Josh Billings
    “Advice is like castor oil, easy to give, but dreadful to take.”


Webster's Revised Unabridged Dictionary
The minerals castor, and pollux, were so named because found together, on the island of Elba. See Castor and Pollux


In literature:

Amilcare, riding like Castor, at one with his horse, went out at the head of his court to meet him.
"Little Novels of Italy" by Maurice Henry Hewlett
Take a strongly printed photograph on paper, and saturate it from the back with a rag dipped in castor oil.
"Scientific American, Volume XLIII., No. 25, December 18, 1880" by Various
Pollux and Castor, might I stand betwixt, In heaven without thee would I not be fixt.
"The Works of Christopher Marlowe, Vol. 3 (of 3)" by Christopher Marlowe
What a young pepper-castor you are!
"Fitz the Filibuster" by George Manville Fenn
This castor is peculiarly attractive to beavers.
"Afar in the Forest" by W.H.G. Kingston
In the first stage of the disease, when the cough is hard and dry, small doses of castor oil and syrup of ipecac may be given to good advantage.
"The Eugenic Marriage, Volume IV. (of IV.)" by Grant Hague
Mr Winterbottom soon showed the effects of the remedy he had taken against the effects of the castor oil.
"Jacob Faithful" by Captain Frederick Marryat
One morning our botanist went forth in quest of plants and found a castor-oil tree, the berries of which pleased him exceedingly.
"Southern Arabia" by Theodore Bent
Castor himself stood on the parapet, and offered Titus to surrender.
"For the Temple" by G. A. Henty
His prescription, however, was not a very alarming one: namely, castor oil and some spirits of sweet nitre.
"Aunt Mary" by Mrs. Perring

In poetry:

"I'd lick your leetle boy Dominique,
I'd lick heem till he's cryin' purty hard,
An' for fear he's gettin' spile, I'd geev' heem castor ile,
An' I would n't let heem play outside de yard."
"Dominique" by William Henry Drummond

In news:

Castor concedes Florida Senate race.
Polls showed Mel Martinez, above, and Betty Castor in a dead heat up to the election.
Democrat Betty Castor , trailing by about 80,000 votes, conceded the race for the vacant Florida Senate seat on Wednesday morning.
Manila School Board hires Pam Castor to fill superintendent's position.
Correction on Castor and Pollux .
WESH 2's Greg Fox took a look at the new attack ad aimed at Karen Castor Dentel.
42" High -46" Wide - Dump angle of 30 degrees -55" Long at top and 20" at the bottom -Dual Castor wheels with pivoting walking axle.
PEG-40 hydrogenated castor oil 1.00.
40 pm Wednesday at the Jiffy Lube in the 3600 block of Aramingo Avenue near Castor.
In it, players attempt to grow and harvest crops of papyrus, flax, castor, wheat and lettuce.
ATK successfully test fired the CASTOR 30 on Dec 10.
Castor beans are back in California as a possible source crop for making biofuels.
Castor's main toxic protein, ricin, is so potent that a single milligram is sufficient to kill an adult.
Pollen from sunflowers, morning glories, lilies, primroses and castor beans.
More on Castor, Pollux .

In science:

Strong stellar winds are invariably radiation-driven, and at solar metallicities, the largest contribution to the radiative acceleration of the gas comes from the absorption and scattering of ultraviolet photons in the lines of the many metal atoms and ions present in the outflowing gas (Castor, Abbott, & Klein, 1975).
The First Stars
Our understanding of how line-driving produces powerful high velocity winds is based on the studies of winds in hot stars that radiate mostly in the UV (e.g., Castor, Abbott, Klein 1975, hereafter CAK; Abbott 1982).
Dynamics of line-driven disk winds in Active Galactic Nuclei
Matter is radially accelerated via momentum transfer from the stellar UV radiation field through absorption and scattering in resonance lines of abundant ions (Castor, Abott, and Klein 1975).
The Ionized Stellar Wind in Vela X-1 During Eclipse
A new specialised detector CASTOR (within CMS) (covering the very forward pseudorapidity region 5.5 ≤ η ≤ 7) has been proposed to search for the centauro phenomenon at LHC.
Cosmic Ray Astrophysics and Hadronic Interactions
Some proposals for very forward instrumentation at the LHC are dedicated to providing benchmarks for the cosmic ray shower initiation in simulations: Castor in Totem/CMS for forward electromagnetic showers, and LHC in ATLAS (Y.
XIth International Conference on Elastic and Diffractive Scattering in Chateau de Blois, France, May 15 - 20, 2005. Conference Summary