Boykinia boy·ki·nia uncommon noun 1. genus of perennial rhizomatous herbs with flowers in panicles; North America; Japan Synonymsgenus Boykinia Related words Word family Boykinia elataBoykinia occidentalis Broader terms rosid dicot genus Parts Saxifragaceae Part of coast boykinia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.