- (n.) A true dolphin (Delphinus); -- often so called by sailors.
- (n.) Any small cetacean of the genus Phocaena, especially P. communis or P. phocaena, of Europe, and the closely allied American species (P. Americana). The color is dusky or blackish above, paler beneath. They are closely allied to the dolphins, but have a shorter snout. Called also harbor porpoise, herring hag, puffing pig, and snuffer.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). porpoise. Retrieved October 1, 2026, from http://smartdefine.org/porpoise/definitions/2047617 |
| Chicago | Webster's. 2011. "porpoise" http://smartdefine.org/porpoise/definitions/2047617 (accessed October 1, 2026). |
| Harvard | Webster's 2011, porpoise, Smart Define, viewed 1 October, 2026, <http://smartdefine.org/porpoise/definitions/2047617>. |
| MLA | Webster's. "porpoise" 27 May 2011. Web. 1 October 2026. <http://smartdefine.org/porpoise/definitions/2047617> |