[1] : The Collaborative International Dictionary of English v.0.48

yolk \yolk\ y=olk or y=ok; 277, n. oe. yolke, yelke,
   yogholke, yoghelke, as. geoloca, geoleca, fr. geolu
   yellow. see yellow. written also yelk.
   1913 webster
   1. the yellow part of an egg; the vitellus.
      1913 webster

   2. zool. an oily secretion which naturally covers the wool
      of sheep.
      1913 webster

   yolk cord zool., a slender cord or duct which connects
      the yolk glands with the egg chambers in certain insects,
      as in the aphids.

   yolk gland zool., 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.
      1913 webster
see also:
yellow yelk yolk cord yolk gland hermaphrodite yolk sack 
unbilical 

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Gland, definition of term: Gland
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Pituitary Gland >> P Words
Pituitary Gland, definition of term: Pituitary Gland
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Pineal Gland >> P Words
Pineal Gland, definition of term: Pineal Gland
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Prostate Gland >> P Words
Prostate Gland, definition of term: Prostate Gland
prostate+gland_pag1.html

Salivary Gland >> S Words
Salivary Gland, definition of term: Salivary Gland
salivary+gland_pag1.html

Thymus Gland >> T Words
Thymus Gland, definition of term: Thymus Gland
thymus+gland_pag1.html

Sweat Gland >> S Words
Sweat Gland, definition of term: Sweat Gland
sweat+gland_pag1.html

Sebaceous Gland >> S Words
Sebaceous Gland, definition of term: Sebaceous Gland
sebaceous+gland_pag1.html

Parotid Gland >> P Words
Parotid Gland, definition of term: Parotid Gland
parotid+gland_pag1.html

Lymph Gland >> L Words
Lymph Gland, definition of term: Lymph Gland
lymph+gland_pag1.html

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