(1):
(n.) A body, composed of wardens and vestrymen, chosen annually by a parish to manage its temporal concerns.
(2):
(n.) A parochial assembly; an assembly of persons who manage parochial affairs; - so called because usually held in a vestry.
(3):
(n.) A room appendant to a church, in which sacerdotal vestments and sacred utensils are sometimes kept, and where meetings for worship or parish business are held; a sacristy; - formerly called revestiary.