first language first lady • first lateran council · · · Info · Definitions · Synonyms · Characters · · first language · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) one's native language; the language learned by children and passed from one generation to the next. Synonyms: mother tongue, maternal language, first language. · · Noun Definition 1 Synonyms · · · mother tongue · · Synonym 1 maternal language · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075