ilama uncommon noun 1. tropical American tree grown in southern United States having a whitish pink-tinged fruit Synonymsilama treeAnnona diversifolia 2. whitish tropical fruit with a pinkish tinge related to custard apples; grown in the southern United States Related words Word family ilama tree Broader terms custard apple WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.