first baseman first base • first battle of ypres · · · Info · Definitions · Synonyms · Characters · · first baseman · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) (baseball) the person who plays first base. Synonyms: first baseman, first sacker. · · Noun Definition 1 Synonyms · · · first sacker · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D 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