Used to treat excess motility of the gastrointestinal tract

• A poisonous crystalline alkaloid (isometric with atropine but more potent)

Wikipedia Word definitions in Wikipedia
Hyoscyamine (also known as daturine) is a tropane alkaloid . It is a secondary metabolite found in certain plants of the family Solanaceae , including henbane ( Hyoscyamus niger ), mandrake ( Mandragora officinarum ), jimsonweed ( Datura stramonium ), tomato ...

WordNet Word definitions in WordNet
n. a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract

Wiktionary Word definitions in Wiktionary
n. (context chemistry English) an alkaloid, the stereoisomer of atropine, used medicinally to treat abdominal pain and similar conditions

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Hyoscyamine \Hy`os*cy"a*mine\, n. [See Hyoscyamus .] (Chem.) An alkaloid found in henbane ( Hyoscyamus niger ), and regarded as its active principle. It is also found with other alkaloids in the thorn apple and deadly nightshade. It is extracted as a white ...