/ Dictionary / Index M Matamoros: Meaning and Definition of Find definitions for: Mat•a•mo•ros Pronunciation: (mat"u-môr'us, -mōr'- Sp. mä"tä-mô'rôs), [key] — n. a seaport in NE Mexico, on the Rio Grande opposite Brownsville, Texas. 187,000. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: matamoros (Thesaurus) Mata Hari Matane Related Content Daily Word Quiz: drowsy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language