wool wax

Also called wool fat, wool wax, wool grease, adeps lanae or yolk.

Paraphrasing a more detailed explanation, cholesterol is extracted from wool grease and wool wax alcohols obtained from the cleaning of wool after shearing.

A flaxseed oil-based lubricant commonly known as "wool wax" used to polish wood furniture is unrelated to lanolin; its name comes from its being a paste wax applied using steel wool.

Lanolin (German, from Latin lāna, "wool", and oleum, "oil birth"), also called wool wax or wool grease, is a yellow waxy substance secreted by the sebaceous glands of wool-bearing animals.