bfcc8476_y___The_Accidental_Smallholder__Term
[Definition] a thick, yellow grease in wool, secreted by the sheep's skin, to confer water resistance. Can be extracted and used for various purposes including cosmetics. Also called yolk, wool fat, wool wax or wool grease. [Term] 
Lanolin
Sheep Terminology - The Accidental Smallholder
Term