(transitive, informal) To fit a microphone and transmitter to (a person). Usually for television performers, or for police informers.

To place in or hang on a rack. / To torture (someone) on the rack. / To cause (someone) to suffer pain. / (figuratively) To stretch or strain; to harass, or oppress by extortion.

(medicine) A preparation of barium sulfate (a radioopaque compound) which the patient ingests for the purpose of producing clear radiographs of the esophagus, stomach, and duodenum.

present participle of unbark