- pitahaya cactus, pitahaya, Acanthocereus tetragonus, Acanthocereus pentagonus - cactus of the southwestern United States and northern Mexico having edible juicy fruit
--1 is a kind of cactus
--1 has parts: pitahaya - pitahaya - highly colored edible fruit of pitahaya cactus having bright red juice; often as large as a peach
--2 is a kind of edible fruit
--2 is a part ofpitahaya cactus, pitahaya, Acanthocereus tetragonus, Acanthocereus pentagonus