Lewis & Short

cănor, ōris, m. [cano], tune, sound, song, melody (poet. or in post-Aug. prose; rare).

  1. I. Lit.
    1. A. Of living beings, Quint. 1, 10, 22: cygni, Lucr. 4, 182; 4, 911: res est blanda canor; discant cantare puellae, Ov. A. A. 3, 315: mulcendas natus ad aures, id. M. 5, 561.
    2. B. Of instruments, the tone: Martius aeris rauci canor, martial clang, Verg. G. 4, 71: lyrae, Ov. H. 16, 180.
  2. II. Trop.: bella truci memorata canore, in heroic poetry, Petr. 5, 19.