Zigadenus zi·ga·de·nus uncommon noun 1. genus of mostly North American poisonous plants; sometimes placed in family Melanthiaceae Synonymsgenus Zigadenus Related words Word family Zigadenus elegansZigadenus glaucusZigadenus nuttalliZigadenus venenosusZigadenus venenosus gramineus Broader terms liliid monocot genus Parts Liliaceae Part of death camasalkali grasswhite camaspoison camasgrassy death camas WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.