Minotaur, Greek mythol­ogy, a monster represented as having the body of a man and the head of a bull. The name means bull of Minos. The bull was confined in the Cretan labyrinth by Minos, king of Crete, and fed on human flesh. Seven youths and seven maidens of Athens were thus sacrificed yearly until Theseus, with the aid of Ariadne, daughter of Minos, succeeded in slaying the monster.