Noun nebraska fern has 1 sense
  1. hemlock, poison hemlock, poison parsley, California fern, Nebraska fern, winter fern, Conium maculatum - 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
    --1 is a kind of poisonous plant
    --1 is a member of Conium, genus Conium
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