pacifier
noun [ C ] uk/ˈpæs.ɪ.faɪ.ər/ us/ˈpæs.ə.faɪ.ɚ/
使人安定的东西;镇静物;镇静剂
something that makes people calm when they are angry or upset
US (UK dummy)橡皮乳头，橡皮奶嘴
a smooth rubber or plastic object that is given to a baby to suck on, in order to comfort it and make it stop crying