custard apple tree cus·tar·dapp·letree uncommon noun 1. any of several tropical American trees bearing fruit with soft edible pulp Synonymscustard applecustard apple tree Related words Broader terms fruit tree Narrower terms cherimoyailamasoursopbullock's heartsweetsoppond applepawpaw Parts Annona Part of custard apple WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.