Previous definitions:
1.
Also called cactus pear, this is the fruit of any of several varieties of cactus. It has a pear-like shape and size, with prickly skin that range in color from green to purplish-red. Its flesh is soft and porous, with a melon-like aroma and a sweet and mild flavor.
As defined by Mechanical Turk
on December 23, 2011