/ Dictionary / Index S sergeantfish: Meaning and Definition of Find definitions for: ser•geant•fish Pronunciation: (sär'junt-fish"), [key] — pl. -fish, -fish•es. the cobia, Rachycentron canadum. any of various other marine fishes with striped fins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sergeant first class sergeant major Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language