A person or device that measures, records, or times the speed or duration of something; especially someone who times athletic performances.
Agent noun from 'clock,' derived from the verb meaning to time or measure with a timepiece. The suffix '-er' creates an agent noun indicating one who performs the action.
In horse racing, clockers are the unsung heroes who time races so precisely that their measurements determine betting odds and racing records—a single clocker's stopwatch can be worth millions of dollars in the racing industry.
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