This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A watch that can be instantly started and stopped by pushing a button and used to measure an exact duration of time.

n. A timepiece designed to measure the amount of time elapsed from a particular time when activated and when the piece is deactivated.

n. a timepiece that can be started or stopped for exact timing (as of a race)

"But the scoreboard or stopwatch is supposed to be reliable."

timer   

thubmnail    wristwatch    clickable    Dictaphone    purifiers