showboat showboard • showboater · · · Info · Definitions · Characters · · showboat · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a river steamboat on which theatrical performances could be given (especially on the Mississippi River). · · Noun Definition 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 h latin small letter h U+0068 o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 w latin small letter w U+0077