/ Dictionary / Index F field officer: Meaning and Definition of Find definitions for: field' of"ficer Pronunciation: [key] — Mil. Mil. an officer holding a field grade. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. field mushroom field of fire Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language