Pronunciation: (per'i-wing"kul),[key] —n. 1. any of various marine gastropods or sea snails, esp. Littorina littorea, used for food in Europe.
2. the shell of any of these animals.
Pronunciation: (per'i-wing"kul),[key] —n. 1. Also called myrtle. a trailing plant, Vinca minor, of the dogbane family, having glossy, evergreen foliage and usually blue-violet flowers.
2. any of several similar plants of the genus Vinca or Catharanthus.