fall-board fall block • fall chronometer · · · Info · Definitions · Synonyms · Characters · · fall-board · · Text Common · · Latin · · Scripts 10 · · Length Definitions · · · (noun) the hinged protective covering that protects the keyboard of a piano when it is not being played. Synonyms: fallboard. · · Noun Definition 1 Synonyms · · · fallboard · · Synonym 1 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 f latin small letter f U+0066 l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072