gila river gila monster • gilbert · · · Info · Definitions · Characters · · gila river · · Text Common · · Latin · · Scripts 10 · · Length 4 · · Syllables Definitions · · · (noun) a river that rises in western New Mexico and flows westward through southern Arizona to become a tributary of the Colorado River. Synonyms: Gila, Gila River. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 v latin small letter v U+0076