Available Definitions:
1) n. - Foam or froth made by soap moistened with water.
2) n. - Foam from profuse sweating, as of a horse.
3) n. - To spread over with lather; as, to lather the face.
4) v. i. - To form lather, or a froth like lather; to accumulate foam from profuse sweating, as a horse.
5) v. t. - To beat severely with a thong, strap, or the like; to flog.