D defs.my
Entry 1 sense Webster, 1913

put up

· IPA
01 v. t. & i. to connect a device to a telephone line surreptitiously, so as to listen to or record the conversations of persons on the telephone without…
  1. 1.
    to connect a device to a telephone line surreptitiously, so as to listen to or record the conversations of persons on the telephone without their knowledge; -- of telephones, persons, or locations. Used as police jargon.[jargon]