Win·kle n. Zool. (a) Any periwinkle. --Holland. (b) Any one of various marine spiral gastropods, esp., in the United States, either of two species of Fulgar (Fulgar canaliculata, and Fulgar carica).
Note: ☞ These are large mollusks which often destroy large numbers of oysters by drilling their shells and sucking their blood.
Sting winkle, a European spinose marine shell (Murex erinaceus). See Illust. of Murex.