The Collaborative International Dictionary of English v.0.48:
Pachyrhizus \Pachyrhizus\ prop. n. (Bot.) A small genus of tropical vines having tuberous roots. Syn: genus Pachyrhizus. [WordNet 1.5]WordNet (r) 3.0 (2006):
Pachyrhizus n 1: small genus of tropical vines having tuberous roots [syn: Pachyrhizus, genus Pachyrhizus]