Noun | 1. | sedative drug - a drug that reduces excitability and calms a person chloral hydrate - a colorless crystalline drug used as a sedative; irritates the stomach and can be addictive drug of abuse, street drug - a drug that is taken for nonmedicinal reasons (usually for mind-altering effects); drug abuse can lead to physical and mental damage and (with some substances) dependence and addiction Doriden, glutethimide - sedative (trade name Doriden) used to treat some sleep disorders medicament, medication, medicinal drug, medicine - (medicine) something that treats or prevents or alleviates the symptoms of disease sedative-hypnotic, sedative-hypnotic drug - a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep |