Meaning of “painkiller” in the English Dictionary

"painkiller" in British English

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painkillernoun [ C ]

uk /ˈpeɪnˌkɪl.ər/ us /ˈpeɪnˌkɪl.ɚ/

a drug that is used to reduce or remove physical pain:

The body produces chemicals that are natural painkillers.
painkilling
adjective [ before noun ] uk /ˈpeɪnˌkɪl.ɪŋ/ us /ˈpeɪnˌkɪl.ɪŋ/

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

"painkiller" in American English

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painkillernoun [ C ]

us /ˈpeɪnˌkɪl·ər/

a pill or other medicine used to reduce or remove physical pain

(Definition of “painkiller” from the Cambridge Academic Content Dictionary © Cambridge University Press)