柯林斯词典painkiller /ˈpeɪnˌkɪlə/ (painkillers) 1. N-COUNT A painkiller is a drug that reduces or stops physical pain. 止痛药 返回 painkiller剑桥词典a drug that is used to reduce or remove physical pain 止痛药 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。 返回 painkiller