balloon flower bal·loonf·lo·wer uncommon noun 1. fragrant puffed-up white to reddish-pink flowers in long narrow clusters on erect stems; Arizona to New Mexico and Utah Synonymsballoon flowerscented penstemonPenstemon palmeri Related words Broader terms wildflower Parts Penstemon WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
