WordWeight : Weighing the Words

Pronunciation : Yolk
Part of Speech : n.
Etymology : [OE. yolke, yelke, ?olke, ?elke, AS. geoloca, geoleca, fr. geolu yellow. See Yellow.] [Written also yelk.]
Definition : 1. The yellow part of an egg; the vitellus.

2. (Zo?l.)

Defn: An oily secretion which naturally covers the wool of sheep. Yolk cord (Zo?l.), a slender cord or duct which connects the yolk glands with the egg chambers in certain insects, as in the aphids. -- Yolk gland (Zo?l.), a special organ which secretes the yolk of the eggs in many turbellarians, and in some other invertebrates. See Illust. of Hermaphrodite in Appendix. -- Yolk sack (Anat.), the umbilical vesicle. See under Unbilical.
Source : Webster's Unabridged Dictionary, 1913