| Noun | 1. | barbiturate - organic compound having powerful soporific effect; overdose can be fatal amobarbital - a barbiturate with sedative and hypnotic effects; used to relieve insomnia and as an anticonvulsant barbital, barbitone, diethylbarbituric acid, diethylmalonylurea, veronal - a barbiturate used as a hypnotic Mebaral, mephobarbital - a long-acting crystalline barbiturate (trade name Mebaral) used as a sedative and as an anticonvulsant in the treatment of epilepsy Nembutal, pentobarbital, pentobarbital sodium, yellow jacket - a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic red devil, secobarbital, secobarbital sodium, Seconal - barbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsions sedative-hypnotic, sedative-hypnotic drug - a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep Luminal, phenobarbital, phenobarbitone, sodium thiopental, purple heart - a long-acting barbiturate used as a sedative Pentothal, thiopental, thiopental sodium, thiopentobarbital sodium - barbiturate that is a hygroscopic powder (trade name Pentothal) that is a strong barbiturate that acts rapidly; induces a relaxed state when injected as a general anesthetic |