[sak-ri-stee] 
| an apartment in or a building connected with a church or a religious house, in which the sacred vessels, vestments, etc., are kept. |
| sac·ris·ty (sāk'rĭ-stē) n. pl. sac·ris·ties A room in a church housing the sacred vessels and vestments; a vestry. [Middle English sacristie, from Anglo-Norman, from Medieval Latin sacristia, from sacrista, sacristan; see sacristan.] |
sacristy
in architecture, room in a Christian church in which vestments and sacred objects used in the services are stored and in which the clergy and sometimes the altar boys and the choir members put on their robes. In the early Christian church, two rooms beside the apse, the diaconicon and the prothesis, were used for these purposes.
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