• WordNet 3.6
    • n eggshell the exterior covering of a bird's egg
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Webster's Revised Unabridged Dictionary
    • eggshell (Zoöl) A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.
    • eggshell (Architecture) having a smooth but not glossy texture like that of a hen's egg; as, a latex paint giving an eggshell finish. Also referred to as matte glaze or non-lustrous glaze.
    • eggshell of a pale, yellowish-white color; as, an eggshell ceiling and light green walls.
    • eggshell The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell.
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Century Dictionary and Cyclopedia
    • n eggshell The shell or outside covering of an egg: chiefly said of the hard, brittle, calcareous covering of birds' eggs. This shell consists mostly of carbonate or lime or chalk, deposited upon and in among the fibers of the egg-pod or putamen. It is a secretion of a particular calcific tract of the oviduct near the end of that tube. It may be nearly colorless and of such crystalline purity and translucency that the contents of the fresh egg show a pinkish blush through it, or very heavy, opaque, flaky white; whole-colored of various tones, as green, blue, drab, ochrey, etc.; or party-colored in many shades of reds, browns, etc., in endless variety of patterns. Besides the evident diversity of character in thickness, roughness, etc., the shell has many variations in microscopic texture, depending upon details of the deposition of the particles of lime in the pod. The shell of an ostrich's egg is so thick and hard that it may seriously wound a man if the egg explodes, as it sometimes does when addled, in consequence of the compression of the gases generated in decomposition.
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Walk on eggshells - If you have to walk on eggshells when with someone, you have to be very careful because they get angry or offended very easily.('Walk on eggs' is also used.)


In literature:

Besides, it is not so much of an eggshell as you suppose.
"Blown to Bits" by R.M. Ballantyne
It was a half hour before Jud got all the fine eggshell out of his eyes.
"The Bishop of Cottontown" by John Trotwood Moore
If it had fallen a little to this side we would have been crushed like eggshells.
"The Camp in the Snow" by William Murray Graydon
It floated buoyant as an eggshell.
"The Adventures of the Chevalier De La Salle and His Companions, in Their Explorations of the Prairies, Forests, Lakes, and Rivers, of the New World, and Their Interviews with the Savage Tribes, Two Hundred Years Ago" by John S. C. Abbott
She's as clean as an eggshell.
"Lucy Maud Montgomery Short Stories, 1905 to 1906" by Lucy Maud Montgomery
Perhaps it was lucky they did not succeed in this attempt, for the boat would no doubt have been crushed like an eggshell on the rocks.
"The Young Alaskans" by Emerson Hough
Only some pieces of eggshell were left.
"Five Little Friends" by Sherred Willcox Adams
At last one eggshell after another burst open.
"Children's Literature" by Charles Madison Curry
No thicker than an eggshell!
"Bird Stories" by Edith M. Patch
Peter's house must have been crushed like an eggshell!
"The Boys of Crawford's Basin" by Sidford F. Hamp
In carrying out an eggshell, broken at one end and of no further use, she dropped it near the foot of the tree.
"Little Brothers of the Air" by Olive Thorne Miller
Swift and relentless as doom the motor craft drove into the rowboat and crushed it like an eggshell.
"The Radio Boys at the Sending Station" by Allen Chapman
My skull's hard, but it would hev been shattered like an eggshell.
"The Great Sioux Trail" by Joseph Altsheler
If we git nipped badly she'll go like an eggshell.
"A Man to His Mate" by J. Allan Dunn
She felt broken and useless, like an empty eggshell.
"Shaman" by Robert Shea
And Sandy felt as if every branch he grasped were an eggshell.
"The House in the Water" by Charles G. D. Roberts
A solid sheet of reddish metal, like a titanic half-eggshell, it glittered under him in an unbroken piece.
"The Red Hell of Jupiter" by Paul Ernst
These dagobas, shaped like half an eggshell, are very similar to the topes of India proper.
"The Pearl of India" by Maturin M. Ballou
Nolan (1960:234) indicates immediate disposition of the eggshell after hatching.
"Natural History of the Bell Vireo, Vireo bellii Audubon" by Jon C. Barlow
Tired of the sport, it had crushed them like eggshells.
"Thirty" by Howard Vincent O'Brien

In news:

Hamilton County medical examiner's report: Baby's skull cracked like eggshell.
Dunn-Edwards has launched an improved version of its Evershield premium exterior flat, velvet and eggshell paint.
Hamilton County medical examiner's report: Baby's skull cracked like eggshell .
The white beads on the woman on the far left are of ostrich eggshell.
Too many decibels coming at your eggshell stove top.
Fred Hoffman, artist of Eggstraordinary Eggs, demonstrates the drill he uses to carve and sculpt eggshells.
McMahon sports an eggshell blue version of the standard announcer uniform in the '80s.
Photographs show 44,856- to 41,010-year-old ostrich eggshell beads produced with techniques similar more.
Scans of the eggshell fragments revealed microscopic features that closely match that of the modern flamingo 's eggs.
A mother writes Angela Trusty about her grown children who seem like they are laying down emotion eggshells when they come home for the holidays.
And, truth be told, waiting-and-walking-on-eggshells.
Sterling woman is egg-static over success selling art from eggshells.
Eggshells Kitchen Company is hoping for a big profit for the 2012 holiday shopping season.
TuneWear Eggshell Pearl for the iPhone 5.
Start saving your eggshells, because it's almost time to plant tomatoes.

In science:

When viewed perpendicular to the orbital plane, the spiral-like pattern, broken spiral pattern, and incomplete concentric shell pattern can be seen, while when viewed along the orbital plane, the alternative concentric half-shell pattern, eggshell pattern, and half-shell half-gap pattern can be seen.
Envelope density pattern around wide binary AGB stars: a dynamical model
Aggeli A, Hamodrakas S.J., Komitopoulou K. and Konsolaki M (1991) Tandemly repeating peptide motifs and their secondary structure in Ceratitis capitata eggshell proteins Ccs36 and Ccs38. Int. J.
A web server to locate periodicities in a sequence