Crossword Genius

Stopwatch button (5)

Ross

I believe the answer is:

reset

(Other definitions for reset that I've seen before include "Replace, resettle or put back again" , "Restore to the initial readings" , "Restore to required state" , "Adjust (eg clock, tuning)" , "Turn back to zero" .)

I've seen this clue in the USA Today, the LA Times, The Wall Street Journal and the King Feature Syndicate.
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