A barbiturate is one of many addictive drugs.
The definition of a barbiturate is one of many addictive drugs mainly used to sedate people or to control seizures.
Phenobarbital is an example of a barbiturate.
any depressant drug, as phenobarbital, derived from barbituric acid and used as a sedative, sleeping pill, anticonvulsant, etc.
Origin of barbituratebarbituric acid + -ate
Any of a group of barbituric acid derivatives that act as central nervous system depressants and are used as sedatives or hypnotics.
Origin of barbituratebarbitur(ic acid) + –ate2.