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1. An act of secretly listening to or recording a person's telephone or internet conversations, often as part of a police investigation.
2. A device that is connected to a communications circuit in a concealed fashion in order to enable a wiretap.
tr.v. wire·tapped, wire·tap·ping, wire·taps
1. To listen to or record in secret (a conversation carried on over a telephone line or other communications channel), often as part of a police investigation.
2. To wiretap the conversations on (a telephone line or other communications channel), often as part of a police investigation.
3. To wiretap the conversations of (a person) or the communications devices in (a place).
4. To connect a concealed listening or recording device to (a telephone line).

wire′tap′per n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.wiretapper - someone who wiretaps a telephone or telegraph wire
eavesdropper - a secret listener to private conversations
References in periodicals archive ?
Wyner [3] introduced the wiretap channel, wherein a source could transmit confidential messages to a certain destination while keeping the messages hidden from a wiretapper.
The pirate wiretapper five minutes later wanted to give other directives, however air traffic controllers warned the planes and prevented a probable disaster.
is subject to the same sanctions and remedies as the wiretapper or electronic eavesdropper.
David Mogentale plays the role here--a wiretapper in possession of a harmless-sounding recording that may not be everything it seems to be.
Confederate General Jeb Stuart even had his own wiretapper with him in
That precipitated a trip to the basement of the building, where we found a listening post--complete with an ashtray full of cigarette butts where the wiretapper had sat, soaked up the conversation, and smoked.
15) They were based on the premise that a president-or any one of us-would trust and permit a potential stool pigeon, informer, human "bug," squealer, snitch, or wiretapper to observe virtually every moment of our waking lives and to hear conversations with our family or guests that might abut on private or policy matters, even if we knew that he or she could be forced by a relentless prosecutor to disclose behavior that we might wish to conceal.
Convicted wiretapper Rafi Pridan alleged that the publisher of a leading Israeli daily plotted to murder two rival publishers, The Associated Press reported.