barbiturate
/ˌbɑɹbɪˈt(j)ʊəɹeɪt/
/ˌbɑɹbɪˈt(j)ʊəɹeɪt/
/ˌbɑɹˈbɪt(j)u.ɪt/
noun
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Any salt or ester of barbituric acid.
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Any of derivatives of barbituric acid that act as depressants of the central nervous system and are used as sedatives or hypnotics.
Synonyms:
barb, barbie, goofball