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stopwatch

1 ENTRIES FOUND:
stopwatch /ˈstɑːpˌwɑːtʃ/ noun
plural stopwatches
stopwatch
/ˈstɑːpˌwɑːtʃ/
noun
plural stopwatches
Britannica Dictionary definition of STOPWATCH
[count]
: a watch that can be started and stopped very quickly and that is used for measuring the amount of time that is taken to do something (such as to run a race)