See caller display for more caller IDBrE /ˌkɔːlər aɪ ˈdiː/ 🔊NAmE /ˌkɔːlər aɪ ˈdiː/ 🔊 noun [uncountable] a system that uses a device on your telephone to identify and display the telephone number of the person who is calling you （电话的）来电显示系统