Definition of Sedative:
Usually refers to a nervine with Cerebral Depressant activity; may also refer to other systems, such as the heart [ORWJr].
Sedatives are medicines which have the power of allaying the actions of the systems generally, or of lessening the exercise of some particular function [Brown1878].
Sedatives are medicines which have the power of allaying the actions of the systems generally, or of lessening the exercise of some particular function, especially of the heart and brain [Meyer1932].
Substance that decreases function of the central nervous system, usually used for nervous tension, pain, neuromuscular spasm, insomnia. Also, an agent that exerts a soothing or tranquilizing effect. (California poppy - mild , Opium poppy - strong.) [Sanchez BOTM680].