Green’s Dictionary of Slang

mic n.1

[abbr.; cf. SE colloq. mike, a microphone]

a microphone.

[US]A. Berkman Singers’ Gloss. Show Business 58: Microphone: (Abbr. mike or mic) An instrument for changing sound.
[US]Run DMC ‘Rock Box’ 🎵 When I’m rockin on the mic, you should all applaud.
[US]King Tee & Mixmaster Spade ‘Ya Better Bring a Gun’ 🎵 When I’m on the mic I take no slack.
[US]Dr Dre ‘Nuthin But a G Thang’ 🎵 When I’m on the mic, it’s like a cookie, they all crumble.
[US]K. Anderson Night Dogs 60: Hanson pulled the mike off the face of the radio and brought it to his mouth.
[UK]Observer Music Monthly 9 May 37: D Double E takes the mic at Pals Bar.
[UK]D.S. Mitchell Killer Tune (2008) 23: LT stood in front of his fan base with his mic hiked high.
Cape Argus Online (Cape Town) 16 Oct. 🌐 Radio is hard work, people think it’s easy and you just switch on a mic and you go.
[Aus]T. Spicer Good Girl Stripped Bare 74: ‘Why was my mic on?’.
[US]A. Trebek The Answer Is 67: He switched off his mic.

In phrases

drop the mic (v.)

(US campus) to walk away after delivering a successful parting shot to conclude an argument.

Urban Dict. 31 Oct. 🌐 After serving someone, I just drop the mic, and walk away.
[US]C. Eble UNC-CH Campus Sl. Spring 2016 3: DROP THE MIC — end a statement, speech, or debate powerfully and conclusively.
[US]D. Rucker Life’s Too Short 168: Playing this gig will propel us to a whole new level, something beyond superstardom. Game changer. Career changer. Done. Drop the mic.
rock someone’s mic (v.)

(US black) of a woman, to fellate.

[US]Ebonics Primer at www.dolemite.com 🌐 rockin’ his mic Definition: suckin’ his dick Example: C’mon bitch rock my mic.