stopwatchstop‧watch /ˈstɒpwɒtʃ $ ˈstɑːpwɑːtʃ, -wɒːtʃ/ noun [countable] 
Examples
a watch used for measuring the exact time it takes to do something, especially to finish a race
ExamplesEXAMPLES FROM THE CORPUS
word sets- As I clicked my stopwatch at the start line it began to rain.
- But seconds after Christopher slid from his chair, Brady clicked a stopwatch.
- Eventually the time had to be decided by the stopwatch of an arena judge.
- Had he not established it scientifically, through his stopwatch studies?
- In 1883, Taylor had taken on an assistant, Emlin Hare Miller, to help with his stopwatch studies.
- In this case, the setting of the edit-point on the source-tape is best done by stopwatch.
- Perhaps the most invaluable feature is the unique cable control that allows you to activate the stopwatch from a tailored finger grip.
- The answer was a hierarchical organization run by the timetable, the rule book, and the stopwatch.
WORD SETS► Chronology
AD, advance, verbafter, prepositionafternoon, nounalarm, nounalarm clock, nouna.m., Anno Domini, annual, adjectiveApril, nounAsh Wednesday, nounAug., August, nounautumn, nounautumnal, adjectivebank holiday, nounBC, BCE, biannual, adjectivebicentenary, nounbicentennial, nounbiennial, adjectivebimonthly, adjectivebirthday, nounbiweekly, adjectivebonfire night, nounBoxing Day, nounBritish Summer Time, nounBST, nouncalendar, nouncalendar month, nouncalendar year, nouncarriage clock, nouncentenary, nouncentury, nounChristmas, nounChristmas Day, nounChristmas Eve, nounChristmastime, nounchronograph, nounchronological, adjectivechronometer, nouncircadian, adjectiveclock, nouncrystal, nouncuckoo clock, nouncycle, nouncyclic, adjectivedaily, adjectivedaily, adverbdate, noundate, verbdawn, nounday, nounDec., decade, nounDecember, noundiamond anniversary, noundiamond jubilee, noundinnertime, noundiurnal, adjectived.o.b., due date, noundusk, nounface, nounFather's Day, nounfeast, nounFebruary, nounfortnightly, adjectiveFourth of July, the, Fri., Friday, nounGood Friday, nounGreenwich Mean Time, nounGregorian calendar, nounguy, nounGuy Fawkes Night, nounhalf-hourly, adjectivehalf-yearly, adjectiveHalloween, nounhand, nounHanukkah, nounharvest festival, nounHogmanay, nounhorn, nounhour, nounhourglass, nounhour hand, nounhr, Independence Day, nounJan., January, nounjubilee, nounJuly, nounJune, nounLabor Day, nounleap year, nounlunar month, nounmainspring, nounman-hour, nounMar., March, nounMardi Gras, nounmarket day, nounMaundy Thursday, nounMay, nounMay Day, nounMichaelmas, nounmidday, nounmiddle age, nounmiddle-aged, adjectivemidnight, nounMidsummer Day, nounmidweek, adjectivemillennium, nounmin., minute hand, nounMon., Monday, nounmonth, nounmorn, nounmorning, nounMothering Sunday, nounMother's Day, nounmovable feast, nounnew moon, nounNew Year, nounNew Year's Day, nounNew Year's Eve, nounnight, nounnightfall, nounnighttime, nounnocturnal, adjectiveNoel, nounnoon, nounnoonday, adjectiveNov., November, nounOct., October, nounp.a., Pancake Day, nounPDT, penultimate, adjectiveper annum, adverbper diem, adverbperiodic, adjectivep.m., PST, public holiday, nounquarter, nounquotidian, adjectiveRemembrance Day, nounSat., Saturday, nounschoolday, nounseason, nounsecond, nounsecond hand, nounself-winding, adjectiveSeptember, nounshockproof, adjectivesilver anniversary, nounsilver jubilee, nounsilver wedding anniversary, nounsolar year, nounsolstice, nounspring, nounspringtime, nounstandard time, nounstopwatch, nounsummer, nounsummer solstice, nounsummertime, nounsummery, adjectiveSun., Sunday, nounsundown, nounsunrise, nounsunset, nounsun-up, nountercentenary, nounThanksgiving, nounthirty, numberThursday, nountime, nountime, verbtimepiece, nountimer, nountime signal, nountime warp, nountime zone, nountoday, adverbtoday, nountomorrow, adverbtomorrow, nountonight, adverbtonight, nountriennial, adjectiveTuesday, nountwilight, nounWed., Wednesday, nounweek, nounweekday, nounweekend, nounweekly, adjectiveweeknight, nounWhit, nounWhitsun, nounwinter, nounwintertime, nounwk., wristwatch, nounyear, nounyesterday, adverbyr., Yule, nounYuletide, noun
a watch used for measuring the exact time it takes to do something, especially to finish a race