The Collaborative International Dictionary of English v.0.48:
Sacristan \Sac"ris*tan\, n. [F. sacristain, LL. sacrista, fr. L. sacer. See Sacred, and cf. Sexton.] An officer of the church who has the care of the utensils or movables, and of the church in general; a sexton. [1913 Webster]WordNet (r) 3.0 (2006):
sacristan n 1: an officer of the church who is in charge of sacred objects [syn: sexton, sacristan]