the dark wax or grease obtained when fish-oils are rubbed into hides and recovered by expression and by washing the hides with alkali, as in the manufacture of chamois leather; the commercial product , U.S. the crude mixture of wax and fatty acids obtained by scouring wool or treating it with organic solvents, used industrially (e.g. as a source of lanolin and in the manufacture of lubricating greas, parkerasv, hapendunud kalarasv (rääs), tarvitatakse nahkade parkimisel naha määrimiseks