'Hyoscyamus' definitions:

Definition of 'Hyoscyamus'

From: WordNet
noun
Genus of poisonous herbs: henbane [syn: Hyoscyamus, genus Hyoscyamus]

Definition of 'Hyoscyamus'

From: GCIDE
  • Hyoscyamus \Hy`os*cy"a*mus\, n. [L., fr. Gr. ?; ? a sow, hog + ? a bean.]
  • 1. (Bot.) A genus of poisonous plants of the Nightshade family; henbane. [1913 Webster]
  • 2. (Med.) The leaves of the black henbane ({Hyoscyamus niger}), used in neuralgic and pectorial troubles. [1913 Webster]