1. 
[syn: vespers, evensong]
The Collaborative International Dictionary of English v.0.48:
Vespers \Ves"pers\, n. pl. [OF. vespres, F. v[^e]pres, 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.
       [1913 Webster]
   Sicilian vespers. See under Sicilian, a.
      [1913 Webster]
WordNet (r) 3.0 (2006):
vespers
    n 1: the sixth of the seven canonical hours of the divine
         office; early evening; now often made a public service on
         Sundays [syn: vespers, evensong]