/ Dictionary / Index O oarfish: Meaning and Definition of Find definitions for: oar•fish Pronunciation: (ôr'fish", ōr'-), [key] — pl. -fish, -fish•es. any long, ribbon-shaped, silvery fish of the genus Regalecus, of deep tropical waters, having a red dorsal fin along the spine that rises to a crest, and reaching a length of 30 ft. (9 m). Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oarfish (Thesaurus) oared oarlock 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