mohair

, usually made of hair: . a coarse cloth, sackcloth Re 6:12 Anything made of sackcloth; (, al.); a sack Ge 42:25 , expressive of mourning or penitence: , , .† a garment of sackcloth Mt 11:21 Lk 10:13 Re 11:3

zak, zakken

sack-cloth, a sign of mourning.

sackcloth

"sack"-cloth, i.e. mohair (the material or garments made of it, worn as a sign of grief)

sackcloth

σάκκος also written σάκος, -ου, ὁ (cf. Heb. שַׂק, which it renders in LXX), 1. a coarse cloth, sackcloth, usually made of hair: Rev.6:12. 2. Anything made of sackcloth; (a) a sack (Gen.42:25, al.); (b) a garment of sackcloth, expressive of mourning or penitence: Mat.11:21, Luk.10:13, Rev.11:3.† (AS)