Meaning

noun in the Protestant Episcopal Church: a committee elected by the congregation to work with the churchwardens in managing the temporal affairs of the church

noun a room in a church where sacred vessels and vestments are kept or meetings are held

originFrom Anglo-Norman vesterie, from Old French vestiaire (“room for vestments, dressing room”), from Latin vestiarium (“wardrobe”). Doublet of vestiary.

Etymology from Wiktionary, CC BY-SA 3.0