(properly) An adult female of the species Bos taurus, especially one that has calved.
(formerly inexact but now common) Any member of the species Bos taurus regardless of sex or age, including bulls and calves.
Beef: the meat of cattle as food.
Any bovines or bovids generally, including yaks, buffalo, etc.
A female member of other large species of mammal, including the bovines, moose, whales, seals, hippos, rhinos, manatees, and elephants.
A woman considered unpleasant in some way, particularly one considered nasty, stupid, fat, lazy, or difficult.
A chock: a wedge or brake used to stop a machine or car.
A chimney cowl.
(chiefly in the passive voice) To intimidate; to daunt the spirits or courage of.