A small room within a house used to store clothing, food, or other household supplies.

(particularly) A private cabinet or a secret hiding place, often used figuratively in idioms.

(now chiefly Scotland, Ireland) A small room or side-room used for storing clothes or bedclothes.

(heraldry) An ordinary similar to a bar but half as broad.

A state or condition of secrecy, privacy, or obscurity.

(transitive) To shut away for private discussion.

(transitive) To put into a private place for a secret interview or interrogation.

(transitive) To shut up in, or as in, a closet for concealment or confinement.

Closeted, secret (especially with reference to gay people who are in the closet).

Denoting anything kept a secret or private.