Any of several flat-jointed tropical American cacti of the genus Opuntia,which includes the prickly pears,especially O. tuna of Jamaica,having yellow flowers and edible red fruit.

• 霸王树产于热带的一种仙人掌属扁平生节的美洲仙人掌，包括具皮刺的梨，尤指产于牙买加的霸王树，有黄色的花和可食用的红色果实。