“cock” is a noun and verb with 8 meanings. Its most common meaning is: obscene terms for penis.
cock
noun
obscene terms for penis
faucet consisting of a rotating device for regulating flow of a liquid
the part of a gunlock that strikes the percussion cap when the trigger is pulled
adult male chicken
adult male bird
verb
tilt or slant to one side
“cock one's head”
set the trigger of a firearm back for firing
to walk with a lofty proud gait, often in an attempt to impress others
“He struts around like a rooster in a hen house”
Source: WordNet 3.1, Princeton University