/ Dictionary / Index O officer of the deck: Meaning and Definition of Find definitions for: of'ficer of the deck' Pronunciation: [key] a naval duty officer responsible for the operation of the ship in the absence of the captain or the executive officer. Abbr. O.O.D. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. officer of the day officer of the guard Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language