hyoscyamus
noun
hyo·scy·a·mus
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Medical Definition of hyoscyamus
1
capitalized
: a genus of poisonous Eurasian herbs of the family Solanaceae that have a capsular fruit and include the henbane (H. niger)
2
: the dried leaves of the henbane containing the alkaloids hyoscyamine and scopolamine and used as an antispasmodic and sedative