Definition of caller ID noun from the Oxford Advanced Learner's Dictionary


caller ID

BrE BrE//ˌkɔːlər aɪ ˈdiː//
; NAmE NAmE//ˌkɔːlər aɪ ˈdiː//
[uncountable] Phone services
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a system that uses a device on your telephone to identify and display the telephone number of the person who is calling you See related entries: Phone services
See the Oxford Advanced American Dictionary entry: caller ID