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periwinkle
(redirected from periwinkles)

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periwinkle

In botany, any of several trailing blue-flowered evergreen plants of the dogbane family, native to Europe and Asia. They range in length from 20 cm/8 in to 1 m/3 ft. (Genus Vinca, family Apocynaceae.)

The related Madagascar periwinkle (Catharanthus roseus) produces chemicals that prevent the division of cells and are used to treat leukaemia.

periwinkle

In zoology, any marine snail of the family Littorinidae, found on the shores of Europe and eastern North America. Periwinkles have a conical spiral shell, and feed on algae.
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