1. 
[syn: scopolamine, hyoscine]
The Collaborative International Dictionary of English v.0.48:
Hyoscine \Hy*os"cine\, n. [See Hyoscyamus.] (Chem.)
   An alkaloid found with hyoscyamine (with which it is also
   isomeric) in henbane, and extracted as a white, amorphous,
   semisolid substance.
   [1913 Webster]
WordNet (r) 3.0 (2006):
hyoscine
    n 1: an alkaloid with anticholinergic effects that is used as a
         sedative and to treat nausea and to dilate the pupils in
         ophthalmic procedures; "transdermal scopolamine is used to
         treat motion sickness"; "someone sedated with scopolamine
         has difficulty lying" [syn: scopolamine, hyoscine]