a small room, enclosed recess, or cabinet for storing clothing, food, utensils, etc.
2.
a small private room, especially one used for prayer, meditation, etc.
3.
a state or condition of secrecy or carefully guarded privacy: Some conservatives remain in the closet except on election day. gay liberation has encouraged many gay people to come out of the closet.
to shut up in a private room for a conference, interview, etc. (usually used in the passive voice): The Secretary of State was closeted with the senator for three hours in a tense session.
Origin: 1300–50; Middle English < Anglo-French, Middle French, equivalent to closclose (noun) + -et-et