- (n.) Any small marine gastropod shell of the genus Littorina. The common European species (Littorina littorea), in Europe extensively used as food, has recently become naturalized abundantly on the American coast. See Littorina.
- (n.) A trailing herb of the genus Vinca.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). periwinkle. Retrieved September 21, 2026, from http://smartdefine.org/periwinkle/definitions/2043977 |
| Chicago | Webster's. 2011. "periwinkle" http://smartdefine.org/periwinkle/definitions/2043977 (accessed September 21, 2026). |
| Harvard | Webster's 2011, periwinkle, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/periwinkle/definitions/2043977>. |
| MLA | Webster's. "periwinkle" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/periwinkle/definitions/2043977> |