stopwatch stop valve • stop watch · · · Info · Definitions · Synonyms · Characters · · stopwatch · · Text Latin · · Script 9 · · Length 2 · · Syllables Definitions · · · (noun) a timepiece that can be started or stopped for exact timing (as of a race). Synonyms: stop watch. · · Noun Definition 1 Synonyms · · · stop watch · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 w latin small letter w U+0077