cloth made of black goats' hair, coarse, rough, and thick, used for sacks, and also worn by mourners (Gen. 37:34;42:25; 2-Sam 3:31; Esther 4:1, Esther 4: 2; Psa 30:11, Psa 30: etc.), and as a sign of repentance (Matt. 11:21). It was put upon animals by the people of Nineveh (Jonah 3:8).