Oxford Dictionary English wiretapping nounnoun BrE BrE//ˈwaɪətæpɪŋ// ; NAmE NAmE//ˈwaɪərtæpɪŋ// [uncountable] Add to my wordlistjump to other resultsthe act of secretly listening to other people’s telephone conversations by attaching a device to the telephone lineSee wiretapping in the Oxford Advanced American DictionaryCheck pronunciation: wiretapping oxfordlearnersdictionaries.com