dried sheep perspiration
• (n.) A peculiar substance obtained from the wool of sheep, consisting largely of potash mixed with fatty and earthy matters. It is used as a source of potash and also for the manufacture of gas.
Su'int (sū'ĭnt) noun [ French] (Chemistry) A peculiar substance obtained from the wool of sheep, consisting largely of potash mixed with fatty and earthy matters. It is used as a source of potash and also for the manufacture of gas. 
Type: Term Pronunciation: swint Definitions: 1. The natural grease in sheep's wool, from which the official wool fat (anhydrous lanolin) is extracted.
Suint is the natural, greasy compound of potash found on the fleeces of sheep, derived from the sheep's sweat. From suint is derived lanolin and sometimes potash is extracted from it.
Excretions from sweat glands deposited in the wool.
the natural grease of the wool of sheep, consisting of a mixture of fatty matter and potassium salts, used as a source of potash and in the preparation of ointments.