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Definition of: coniine
(kō′ni·ēn, -nē·in) noun Chem.
A yellowish, oily, volatile alkaloid, C8H17N, contained in poison hemlock (Conium maculatum): a narcotic, sometimes used locally to relieve pain. Also co·nin (kō′nin), co·nine (kō′nēn). [<CONIUM]
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