nopalPronunciation: /ˈnəʊp(ə)l, ˈnəʊpal/Definition of nopal noun a cactus which is a major food plant of the bugs from which cochineal is obtained. Genus Nopalea, family Cactaceae: several species, in particular N. cochinellifera (nopales /nəʊˈpɑːlɛz/) the edible fleshy pads of the nopal cactus, used in Mexican cuisine. Origin: mid 18th century: via French and Spanish from Nahuatl nopalli 'cactus'nopal in other Oxford dictionaries Definition of nopal in the US English dictionary