(anc. geog.), a famous trading town of the Thebais, inhabited by Egyptians and Arabs, some distance from the Nile; others place it in a small island in the Nile, on which, however, it had a port. Here Isis, on hearing of the death of Osiris, cut one of her locks and put on mourning; and hence the name Cop-tos, signifying privation. A proof this of the antiquity of the place. And for this reason the Iiaci, or priests of Isis, were bald, according to Juvenal.