n. [ OF. orison, oreson, oreison, F. oraison, fr. L. oratio speech, prayer. See Oration. ] A prayer; a supplication. [ Poetic ] Chaucer. Shak. [ 1913 Webster ]
Lowly they bowed, adoring, and began
Their orisons, each morning duly paid. Milton. [ 1913 Webster ]
n. Horizon. [ Obs. ] Chaucer. [ 1913 Webster ]