noun applied colloquially to human flesh.
2. beef ·adj of, pertaining to, or resembling, beef.
3. beef ·noun the flesh of an ox, or cow, or of any adult bovine animal, when slaughtered for food.
4. beef ·noun an animal of the genus bos, especially the common species, b. taurus, including the bull, cow, and ox, in their full grown state; ·esp., an ox or cow fattened for food.