Noun periwinkle has 4 senses
  1. periwinkle - chiefly trailing poisonous plants with blue flowers
    --1 is a kind of
    subshrub, suffrutex
    --1 is a member of Vinca, genus Vinca
    --1 has particulars: myrtle, Vinca minor; large periwinkle, Vinca major
  2. periwinkle, rose periwinkle, Madagascar periwinkle, old maid, Cape periwinkle, red periwinkle, cayenne jasmine, Catharanthus roseus, Vinca rosea - commonly cultivated Old World woody herb having large pinkish to red flowers
    --2 is a kind of herb, herbaceous plant
    --2 is a member of Catharanthus, genus Catharanthus
  3. periwinkle, winkle - small edible marine snail; steamed in wine or baked
    --3 is a kind of seafood
    --3 is a substance of periwinkle, winkle
  4. periwinkle, winkle - edible marine gastropod
    --4 is a kind of seasnail
    --4 is a member of Littorina, genus Littorina
    --4 has substances: periwinkle, winkle
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