Definition of cock
1 a
: the adult male of the domestic chicken (Gallus gallus) : rooster
b
: the male of birds other than the domestic chicken
c
: woodcock
e
: weathercock
2
: a device (such as a faucet or valve) for regulating the flow of a liquid
- the cock of an automobile radiator
3 a
: a chief person : leader
b
: a person of spirit and often of a certain swagger or arrogance
4 a
: the hammer in the lock of a firearm
b
: the cocked position of the hammer
—
cock of the walk
: one that dominates a group or situation especially overbearingly
- He was strutting around like the cock of the walk after he got a promotion.
