winkle
Pronunciation: /ˈwɪŋk(ə)l/
noun
- 1a small herbivorous shore-dwelling mollusc with a spiral shell. Also called periwinkle2.
- Family Littorinidae, class Gastropoda: many genera and species, including the common and edible Littorina littorea
verb

Origin:
late 16th century: shortening of periwinkle2