crybaby tree cry·ba·byt·ree uncommon noun 1. small South American spiny tree with dark crimson and scarlet flowers solitary or clustered Synonymsceibocrybaby treecry-baby treecommon coral treeErythrina crista-galli Related words Broader terms coral tree WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.