foster brother foster babe • foster-brother · · · Info · Definitions · Synonyms · Characters · · foster brother · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) your foster brother is a male who is not a son of your parents but who is raised by your parents. Synonyms: foster-brother, foster brother. · · Noun Definition 1 Synonyms · · · foster-brother · · Synonym 1 Characters · · space U+0020 b latin small letter b U+0062 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074