counter
noun
count·er
ˈkau̇n-tər
plural counters
: a person or thing that counts something
… I would just tell them I am a very fast counter.—
Judy Blume
especially
: a device or process for indicating a number or amount
a counter that records how many times a website is visited
As they entered the main door on Fifth Avenue, the guard clicked off two numbers on his people counter. —
E. L. Konigsburg
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Merriam-Webster unabridged



