wiretap
verb [ T or I ] uk/ˈwaɪə.tæp/ us/ˈwaɪr.tæp/ -pp-
窃听电话;给电话安窃听器
to secretly listen to people by connecting a listening device to their telephone, or to attach a listening device to a telephone for this purpose
The court gave permission to have his phone wiretapped to gather evidence. 法庭准许窃听他的电话以搜集证据。