icaco n. 1. A small tropical American tree (Chrysobalanus icaco) bearing edible plumlike fruit.Syn. -- coco plum, coco plum tree, cocoa plum, Chrysobalanus icaco.[WordNet 1.5]
2. A plum-shaped whitish to almost black fruit used for preserves.Syn. -- cocoa plum, coco plum.[WordNet 1.5]