| Noun | 1. | genus Colubrina - mostly tropical American shrubs or small trees with small yellowish flowers and yellow or red fruits dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination buckthorn family, family Rhamnaceae, Rhamnaceae - trees and shrubs usually thorny bearing drupaceous fruit many having medicinal value nakedwood - any of several small to medium-sized trees of Florida and West Indies with thin scaly bark and heavy dark heartwood |