nopal UK /ˈnəʊpəl/US /noʊˈpɑl/ noun1 •A prickly pear cactus from the genus Opuntia, especially Opuntia cochinellifera; the edible pads (fleshy leaves) of the cactus, considered as food.They rode up through cholla and nopal, a dwarf forest of spined things, through a stone gap in the mountains and down among blooming artemisia and aloe. — 1985 formsnopals