(informal) harsh / (informal, slang) nasty

cow (bovine)

(fantasy, mythology) werecow

(figuratively) taboo subject, sacred cow (something which shouldn't be broached or criticized, for fear of public outcry)

(informal) Exclamation of surprise or astonishment: crap!, dammit!, shucks! holy cow!

cash cow (something that generates free cash flow)

(informal, derogatory) battle axe, cat, nasty piece of work

sea cow

(simile, vulgar) to rain like a cow pissing on a flat rock, to piss it down

mad cow disease