What is the meaning of Cock?

A male bird, especially:

A rooster: a male gallinaceous bird, especially a male domestic chicken (Gallus gallus domesticus).

A cock pigeon.

A valve or tap for controlling flow in plumbing.

The hammer of a firearm trigger mechanism.

A penis.

The circle at the end of the rink.

The state of being cocked; an upward turn, tilt or angle.

A stupid, obnoxious or contemptible person.

Nonsense; rubbish; a fraud.

A man; a fellow.

A boastful tilt of one's head or hat.

Shuttlecock.

A vane in the shape of a cock; a weathercock.

A chief person; a leader or master.

A leading thing.

The crow of a cock, especially the first crow in the morning; cockcrow.

A male fish, especially a salmon or trout.

The style or gnomon of a sundial.

The indicator of a balance.

The bridge piece that affords a bearing for the pivot of a balance in a clock or watch.

To lift the cock of a firearm or crossbow; to prepare (a gun or crossbow) to be fired.

To be prepared to be triggered by having the cock lifted.

To erect; to turn up.

To copulate with; (by extension, as with fuck) to mess up, to damage, to destroy.

To turn or twist something upwards or to one side; to lift or tilt (e.g. headwear) boastfully.

To turn (the eye) obliquely and partially close its lid, as an expression of derision or insinuation.

To strut; to swagger; to look big, pert, or menacing.

To make a nestle-cock of, to pamper or spoil (a child).

Expression of annoyance.

Vulva, vagina.

Hay-cock, a small conical pile of hay.

To form into piles.

Abbreviation of cock-boat, a type of small boat.

A corruption of the word God, used in oaths.

Source: wiktionary.org