The Collaborative International Dictionary of English v.0.48:
Guevina \Guevina\ n. 1. A genus having only one species: the Chilean nut. Syn: genus Guevina. [WordNet 1.5]WordNet (r) 3.0 (2006):
Guevina n 1: one species: Chilean nut [syn: Guevina, genus Guevina]