D defs.my
Entry 1 sense Webster, 1913

Atropine

· At·ro·pine · IPA /ˈæ.tɹəˌpin/
01 n. A poisonous, white, crystallizable alkaloid, extracted from the Atropa belladonna, or deadly nightshade, and the Datura Stramonium, or thor…
  1. 1.
    A poisonous, white, crystallizable alkaloid, extracted from the Atropa belladonna, or deadly nightshade, and the Datura Stramonium, or thorn apple. It is remarkable for its power in dilating the pupil of the eye. Called also daturine.(Chem.) Also: daturine