yolks

yolk

[yohk, yohlk]
noun
1.
the yellow and principal substance of an egg, as distinguished from the white.
2.
Embryology. the part of the contents of the egg of an animal that enters directly into the formation of the embryo, together with any material that nourishes the embryo during its formation.
3.
the essential part; the inner core.
4.
a natural grease exuded from the skin of sheep.
Also, yoke.


Origin:
before 1000; Middle English yolke, yelke, Old English geoloca, derivative of geolu yellow

yolked, adjective
yolkless, adjective
yolky, adjective

yoke, yolk.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
yolk (jəʊk)
 
n
1.  the substance in an animal ovum consisting of protein and fat that nourishes the developing embryoRelated: vitelline
2.  a greasy substance secreted by the skin of a sheep and present in the fleece
 
Related: vitelline
 
[Old English geoloca, from geoluyellow]
 
'yolkless
 
adj
 
'yolky
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

yolk
O.E. geolca, geoloca "yolk," lit. "the yellow part," from geolu "yellow" (see yellow). Formerly also spelled yelk.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

yolk (yōk)
n.
The portion of the egg of an animal that consists of protein and fat from which the early embryo gets its main nourishment and of protoplasmic substances from which the embryo develops.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
yolk   (yōk)  Pronunciation Key 
The yellow internal part of the egg of a bird or reptile. The yolk is surrounded by the albumen and supplies food to the developing young.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Synonyms
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