Definition of periwinkle
1
: any of several trailing or woody evergreen herbs of the dogbane family: such as
a (1)
: a European creeper (Vinca minor) widely cultivated as a ground cover and for its blue or white flowers — called also
myrtle
(2)
: a trailing plant (Vinca major) with large blue flowers that is used as a ground cover and in window boxes
b
: rosy periwinkle
2
: a light purplish blue — called also
periwinkle blue
