chief of staff chiefly • chief of state · · · Info · Definitions · Characters · · chief of staff · · Text Common · · Latin · · Scripts 14 · · Length 3 · · Syllables Definitions · · · (noun) the senior officer of a service of the armed forces. Synonyms: chief of staff. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074