Meaning of “tranquillizer” in the English Dictionary

british dictionary

"tranquillizer" in British English

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tranquillizernoun [ C ]

UK UK also tranquilliser, US tranquilizer uk /ˈtræŋ.kwɪ.laɪ.zər/ us /ˈtræŋ.kwə.laɪ.zɚ/

a drug used to make a person or animal calmer:

She was on tranquillizers for a long time after her son died.

(Definition of “tranquillizer” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)