[jelk]
n.
<古><方>蛋黄,卵黄

Yelk \Yelk\, n.
Same as {Yolk}.

Yolk \Yolk\ (y[=o]lk or y[=o]k; 277), n. [OE. yolke, yelke,
[yogh]olke, [yogh]elke, AS. geoloca, geoleca, fr. geolu
yellow. See {Yellow}.] [Written also {yelk}.]
1. The yellow part of an egg; the vitellus.

2. (Zo["o]l.) An oily secretion which naturally covers the
wool of sheep.

{Yolk cord} (Zo["o]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["o]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}.