The Collaborative International Dictionary of English v.0.48:
Chionanthus \Chionanthus\ n. a genus of deciduous trees or shrubs: fringe tree. Syn: genus Chionanthus. [WordNet 1.5]WordNet (r) 3.0 (2006):
Chionanthus n 1: deciduous trees or shrubs: fringe tree [syn: Chionanthus, genus Chionanthus]