| echinocactus | (n) any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil, Syn. barrel cactus |
| genus echinocactus | (n) globular or cylindrical cacti; southwestern United States to Brazil |
| golden barrel cactus | (n) large cactus of east central Mexico having golden to pale yellow flowers and spines, Syn. Echinocactus grusonii |