rio grande rio de la plata • rio nunez coffee · · · Info · Definitions · Characters · · rio grande · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) a North American river; boundary between the United States and Mexico; flows into Gulf of Mexico. Synonyms: Rio Grande, Rio Bravo. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072