'Somniferous' definitions:

Definition of 'somniferous'

From: WordNet
adjective
Sleep inducing [syn: soporific, soporiferous, somniferous, somnific, hypnogogic, hypnagogic]

Definition of 'Somniferous'

From: GCIDE
  • Somniferous \Som*nif"er*ous\, a. [L. somnifer; somnus sleep + ferre to bring.] Causing or inducing sleep; soporific; dormitive; as, a somniferous potion. --Walton. [1913 Webster]