the male of any bird, esp. of the gallinaceous kind.
3.
Also called stopcock.a hand-operated valve or faucet, esp. one opened or closed by rotating a cylindrical or tapered plug having part of the passage pierced through it from side to side.
4.
(in a firearm)
a.
the part of the lock that, by its fall or action, causes the discharge; hammer.
b.
the position into which the cock, or hammer, is brought by being drawn partly or completely back, preparatory to firing.