genus Hyoscyamus ge·nus·hyos·cyamus uncommon noun 1. genus of poisonous herbs: henbane SynonymsHyoscyamusgenus Hyoscyamus Related words Broader terms asterid dicot genus Parts Solanaceae Part of henbaneEgyptian henbane WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
