One used to store food or other household supplies: a cupboard. / (obsolete) Any private space, (particularly) bowers in the open air.

(historical) A private conference or interview.

present participle of closet

Confined. / Sheltered, protected

simple past tense and past participle of closet

(colloquial) Not open about one's sexual orientation, romantic orientation, or gender identity. / (colloquial, by extension) Not open about some feature of one's life; often construed with about.

(informal) Not open about one's sexual orientation, romantic orientation, or gender identity. / (by extension) Not open about some aspect of one's identity, tendency or fondness; secret.

(obsolete) private / closeted, secret (especially with reference to gay people who are in the closet)

(transitive) To shut away for private discussion. / (transitive) To put into a private place for a secret interview or interrogation.

plural of closet