Definition of rose willow in US English:

rose willow

noun

  • North American. Any of several dogwoods (genus Cornus) having red twigs; especially the red osier dogwood, C. sericea.

Origin

Late 16th century (in an earlier sense). From rose + willow.

Pronunciation

rose willow

/ˈrəʊz ˌwɪləʊ/