'Relaxant' definitions:

Definition of 'relaxant'

From: WordNet
adjective
Tending to relax or relieve muscular or nervous tension; "a relaxant drug"
noun
A drug that relaxes and relieves tension

Definition of 'Relaxant'

From: GCIDE
  • Relaxant \Re*lax"ant\ (r?-l?ks"ant), n. [L. relaxans, p. pr. of relaxare.] (Med.) A medicine that relaxes; a laxative. [1913 Webster]