Noun | 1. | relaxant - a drug that relaxes and relieves tension drug - a substance that is used as a medicine or narcotic muscle relaxant - a drug that reduces muscle contractility by blocking the transmission of nerve impulses or by decreasing the excitability of the motor end plate or by other actions |
Adj. | 1. | relaxant - tending to relax or relieve muscular or nervous tension; "a relaxant drug" depressant - capable of depressing physiological or psychological activity or response by a chemical agent |