in Greek mythology a flesh-eating monster with a human body and the head of a bull, late 14c., from Greek minotauros, from Minos, king of Crete (compare Minoan), + tauros "bull" (see Taurus). The son of Pasiphae (wife of Minos) by a bull, he was confined in the labyrinth and killed by the Athenian hero Theseus.