Vestry 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.

Vestry n. : A parochial assembly; an assembly of persons who manage parochial affairs; -- so called because usually held in a vestry.

Vestry n. : A body, composed of wardens and vestrymen, chosen annually by a parish to manage its temporal concerns.

Example:
What do you think of this joke Amazing Experience in the Vestry?

Taxonomy
vestry, congregation, parish, free encyclopedia, church, lay members, the church, business, provision, open vestries, select vestries, provinces, vestments, search, storage room, administrative committee, store, England.

Defination from the web:
vestry was also the standard term for what would today usually be called a parochial church council. ... The vestry may have additional functions, including selection of the rector of the church. ...