What does "red periwinkle" mean?

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

Red periwinkle

Common synonyms include: cape periwinkle, catharanthus roseus, cayenne jasmine, madagascar periwinkle, old maid, periwinkle.

Rare ·Advanced level

Noun

1
commonly cultivated Old World woody herb having large pinkish to red flowers wordnet