Webster's Revised Unabridged Dictionary · 1913

Vestment

Vestment , noun

[Old English vestement, vestiment, Old French vestement, vestiment, French vêtement, from Latin vestimentum, from vestire to clothe, from vestis a garment, clothing. See Vest.]

(Ecclesiastical) A covering or garment; some part of clothing or dress
(Ecclesiastical) any priestly garment.
Royal vestiment. — Chaucer
Priests in holy vestments. — Shakespeare
The sculptor could not give vestments suitable to the quality of the persons represented. — Dryden