Lanolin
Lanolin (lan"o*lin) , noun
[Latin lana wool + oleum oil.]
(Physiology Chemistry) A peculiar fatlike body, made up of cholesterin and certain fatty acids, found in feathers, hair, wool, and keratin tissues generally.
Under the same name, it is prepared from wool for commercial purposes, and forms an admirable basis for ointments, being readily absorbed by the skin.