1) Call off a police stakeout 2) Civil rights organization 3) Race timer 4) Race timing device 5) Stopo watch 6) Time-measuring device 7) Timer 8) Timing device 1) Timer 
[Campaign] StopWatch is a joint venture between a range of civil society organisations, activist and human rights groups, academics and campaigners. StopWatch was established to address concerns about the use of Stop and Search powers by police in the UK with regards to law, community relations and civil rights. Its primary target is addres...
[n] - a timepiece that can be started or stopped for exact timing (as of a race)
stopo watch noun a timepiece that can be started or stopped for exact timing (as of a race)
Handheld watch used by timers and coaches to record a swimmer's time in an event. In meets with electronic timing, timers will still use stopwatches to record back-up times, in case the electronic timing system fails.
a watch with a hand or hands that can be stopped or started at any instant, used for precise timing, as in races.