Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A bitter poisonous alkaloid, C45H73NO15, derived from potato sprouts, tomatoes, and nightshade and having narcotic properties formerly used to treat epilepsy.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A poisonous glycoalkaloid found in many species of the nightshade family.

from the GNU version of the Collaborative International Dictionary of English

  • n. A poisonous alkaloid glucoside extracted from the berries of common nightshade (Solanum nigrum), and of bittersweet, and from potato sprouts, as a white crystalline substance having an acrid, burning taste; -- called also solonia, and solanina.

from The Century Dictionary and Cyclopedia

  • n. A complex body, either itself an alkaloid or containing an alkaloid, the active principle of bittersweet, Solanum Dulcamara. It is a narcotic poison.

Etymologies

French, from Latin sōlānum, nightshade, from sōl, sun; see sāwel- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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