Webster's Revised Unabridged Dictionary · 1913

Closet

Closet , noun

[Old French closet little inclosure, dim. of clos. See Close an inclosure.]

1.
A small room or apartment for retirement; a room for privacy.
A chair-lumbered closet, just twelve feet by nine. — Goldsmith
When thou prayest, enter into thy closet. — Matt. vi. 6
2.
A small apartment, or recess in the side of a room, for household utensils, clothing, etc. — Dryden
Collocations (1)
Closet sin , sin commited in privacy. — Bp. Hall

Closet , transitive verb

1.
To shut up in, or as in, a closet; to conceal. [Rare]
Bedlam's closeted and handcuffed charge. — Cowper
2.
To make into a closet for a secret interview.
He was to call a new legislature, to closet its members. — Bancroft
He had been closeted with De Quadra. — Froude