Related topics: Telephone, telegraph
wire·tap·ping /ˈwaɪətæpɪŋ $ ˈwaɪr-/ noun [uncountableU] TCTthe action of secretly listening to other people’s telephone conversations, by connecting something to the wires of their telephone 〔在某人电话线路上的〕搭线窃听,电话窃听
—wiretap noun [countableC]
—wiretap verb [transitiveT]