sacristy

noun, plural sac·ris·ties.

1. an apartment in or a building connected with a church or a religious house, in which the sacred vessels, vestments, etc., are kept.

noun plural -ties

1. a room attached to a church or chapel where the sacred vessels, vestments, etc, are kept and where priests attire themselves

n.“repository for sacred things,” mid-15c., from Anglo-French sacrestie, from Medieval Latin sacrista, from Latin sacer “sacred” (see sacred).