flowering shrub flo·we·ringsh·rub uncommon noun 1. shrub noted primarily for its flowers Synonymsflowering shrub Related words Broader terms shrub Narrower terms bird of paradisepride of barbadosScotch laburnumcommon laburnumAsiatic sweetleaf Parts Angiospermae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.