(n.) Either one of two species of birds composing the genus Chionis, and family Chionidae, native of the islands of the Antarctic seas.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sheathbill. Retrieved October 2, 2026, from http://smartdefine.org/sheathbill/definitions/2061207 |
| Chicago | Webster's. 2011. "sheathbill" http://smartdefine.org/sheathbill/definitions/2061207 (accessed October 2, 2026). |
| Harvard | Webster's 2011, sheathbill, Smart Define, viewed 2 October, 2026, <http://smartdefine.org/sheathbill/definitions/2061207>. |
| MLA | Webster's. "sheathbill" 28 May 2011. Web. 2 October 2026. <http://smartdefine.org/sheathbill/definitions/2061207> |