#timer  a timepiece that measures a time interval and signals its end
  supertype:  timepiece__timekeeper  a measuring instrument or device for keeping time
  subtype:  chronograph  an accurate timer for recording time
  subtype:  parking_meter__parkingmeter  a coin-operated timer located next to a parking space; depositing money into it entitles you to park your car there for a specified length of time
  subtype:  stopwatch__stopo_watch__stopowatch  a timepiece that can be started or stopped for exact timing (as of a race)

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