painkiller noun [ C ] uk/ˈpeɪnˌkɪl.ər/ us/ˈpeɪnˌkɪl.ɚ/ (also US pain reliever)
止痛药a drug that is used to reduce or remove physical pain
The body produces chemicals that are natural painkillers. 人体会产生一些化学物质,它们是天然的止痛剂。
Synonym: analgesic
Related word: painkilling