Vestry

noun

1. A room in a church where the clergy put on their vestments and where these are stored; also used for meetings and classes; a sacristy.

   "The choirboys change into their cassocks in the vestry."

2. A committee of parishioners elected to administer the temporal affairs of a parish.

   "The vestry meets on the first Tuesday of every month."

3. An assembly of persons who manage parochial affairs; so called because usually held in a vestry.