1. any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil; [syn: echinocactus, barrel cactus]
WordNet (r) 3.0 (2006):
echinocactus
n 1: any cactus of the genus Echinocactus; strongly ribbed and
very spiny; southwestern United States to Brazil [syn:
echinocactus, barrel cactus]