the mature female animal of cattle, esp domestic cattle
a cow that has had more than one calf
a mature female of various other animals, e.g. the whale, seal, or moose
informal a woman, esp an unpleasant one who is unpleasant in some way
Aus, NZ, informal a cause of annoyance or difficulty
till the cows come home
for a very long time; indefinitely
[Old English cū]