/ Dictionary / Index F first officer: Meaning and Definition of Find definitions for: first' of'ficer Pronunciation: [key] See copilot. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. first offender first papers Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language