Vespers

Ves″pers (?), n. pl. [OF. vespres, F. vêpres, LL. vesperae, fr. L. vespera evening. See Vesper, n.] (R. C. Ch.) (a) One of the little hours of the Breviary. (b) The evening song or service.

Sicilian vespers. See under Sicilian, a.