Periwinkle

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.

A trailing herb of the genus Vinca.

commonly cultivated Old World woody herb having large pinkish to red flowers

edible marine gastropod

chiefly trailing poisonous plants with blue flowers

small edible marine snail; steamed in wine or baked