timer

 
Pronunciation: /ˈtʌɪmə/

noun

  • 1an automatic mechanism for activating a device at a preset time: a video timer
  • a person or device that measures or records the amount of time taken by a process or activity: the challenge is to play the game with the timer
  • 2 [in combination] used to indicate how many times someone has done something: for most first-timers the success rate is 45 per cent