Definitions for "wiretap"
the act or event of tapping a telephone or telegraph line to get information surreptitiously.
to tap{5} (a telephone or telegraph line) to get information surreptitiously; also, to obtain or record (information) by use of a wiretap.
tap a telephone or telegraph wire to get information; "The FBI was tapping the phone line of the suspected spy"; "Is this hotel room bugged?"
Americaâ€(tm)s Broken Bootstraps Leanne Shear
a device placed on a phone line and detects electrical signals that will be decoded as voice communication
Keywords:  interpret, patterns, sound, device
a device that can interpret these patterns as sound