Main Entry: rosy periwinkle

Pronunciation: \ˈrō-zē-\

Function: noun

: a commonly cultivated shrub (Catharanthus roseus synonym Vinca rosea) of the dogbane family (Apocynaceae) that is native to the Old World tropics and is the source of several antineoplastic drugs (as vinblastine and vincristine)—called also Madagascar periwinkle, periwinkle