Lewis & Short

1. ŏlor, ōris, m., a swan (poet. and in post-Aug. prose for cygnus): ad vada Maeandri concinit albus olor, Ov. H. 7, 2: arguti, Verg. E. 9, 36: nivei, Val. Fl. 6, 102: purpurei, Hor. C. 4, 1, 10; Plin. 10, 23, 32, § 63 et saep.: olorum morte narratur flebilis cantus, id. ib.