- any of several cacti of the genus Nopalea, resembling the prickly pear.
- the fruit of such a cactus, or of a similar cactus, as the prickly pear.
- any of various cactuses of the genus Nopalea, esp the red-flowered N. cochinellifera, which is a host plant of the cochineal insect
- a cactus, Opuntia lindheimeri, having yellow flowers and purple fruits
