| Razorbill (n.) A species of auk (Alca torda) common in the Arctic seas. See Auk, and Illust. in Appendix. |
| Razorbill (n.) See Cutwater, 3. |
| Alca genus Alca | type genus of the Alcidae comprising solely the razorbill |
| razorbill razor-billed auk Alca torda | black-and-white northern Atlantic auk having a compressed sharp-edged bill |