hemlock

1. poisonous drug derived from an Eurasian plant of the genus ConiumExamples: "Socrates refused to flee and died by drinking hemlock"Synonyms: hemlock

2. 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 poisonousSynonyms: California fern, Conium maculatum, Nebraska fern, hemlock, poison hemlock, poison parsley, winter fern

3. soft coarse splintery wood of a hemlock tree especially the western hemlockSynonyms: hemlock

4. an evergreen treeSynonyms: hemlock, hemlock tree