Definition that contains genus echinocactus
- echinocactus any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil
- hedgehog cactus cactus of the genus Echinocactus having stout sharp spines
- barrel cactus any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil