informal To fit a portable microphone to a person or thing. A noun or pronoun can be used between "mic" and "up." I still need to mic up the guests before we begin the interview. I don't like it when musicals mic the actors up. It's just really distracting to see. It turns out the police had mic'd up the company's office to record evidence of their illegal dealings.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.