Sackcloth in Smiths Bible Dictionary

cloth used in making sacks or bags, a coarse fabric, of a dark color, made of goat's hair, Isa 50:3; Re 6:12 end resembling the eilicium of the Romans. It, was used also for making the rough garments used by mourners, which were in extreme cases worn next the skin. 1Ki 21:27; 2Ki 6:30; Job 16:15; Isa 32:11

Read More about Sackcloth in Smiths Bible Dictionary