| pitahaya | (n) highly colored edible fruit of pitahaya cactus having bright red juice; often as large as a peach |
| pitahaya cactus | (n) cactus of the southwestern United States and northern Mexico having edible juicy fruit, Syn. pitahaya, Acanthocereus pentagonus, Acanthocereus tetragonus |
| Pitahaya | n. [ Sp., prob. from the native name. ] (Bot.) A cactaceous shrub (Cereus Pitajaya) of tropical America, which yields a delicious fruit. [ 1913 Webster ] |