/ Dictionary / Index O on-mike: Meaning and Definition of Find definitions for: on-mike Pronunciation: (on'mīk', ôn'-), [key] — adj. projected by the microphone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. only onnagata Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language