noun
globular or cylindrical cacti; southwestern United States to Brazil
• Hypernyms: ↑caryophylloid dicot genus
• Member Holonyms: ↑Cactaceae, ↑family Cactaceae, ↑cactus family
• Member Meronyms: ↑echinocactus, ↑barrel cactus
Useful english dictionary. 2012.