tarboosh UK /tɑːˈbuːʃ/US /tɑɹˈbuʃ/ noun1 •A red felt or cloth cap with a tassel, worn in the Arab world; a fez.He went to the Pyramids and Syria, and there left his malady behind him, and returned with a fine beard, and a supply of tarbooshes and nargillies, with which he regales all his friends. — 1848 formstarbooshes