/ Dictionary / Index M marline: Meaning and Definition of Find definitions for: mar•line Pronunciation: (mär'lin), [key] — n. Naut. small stuff of two-fiber strands, sometimes tarred, laid up left-handed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: marline (Thesaurus) marlin marlinespike Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language