Synonyms for Poison Hemlock (same or very similar meaning)
WordNet sense 1 (large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous):
hemlock, California fern, Conium maculatum, Nebraska fern, poison parsley, winter fern
From the ODE community, based on WordNet
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