also: カウンタ
We counted the number of visitors with a counter.
service counter; counter at a shop or bank
A counter or desk where customers are served, such as at a bank, store, reception area, or airport.
Please leave your luggage at the reception counter.
bar counter; counter seating
The long counter at a bar, cafe, restaurant, or similar place, often with seats facing the staff or kitchen.
I sat at the counter and drank coffee.
counterattack; counter in soccer
Sports use, especially in soccer, for a quick attack launched immediately after winning the ball or stopping the opponent.
They launched a quick counterattack after the opponent's mistake.
counterpunch; counter
Boxing use for a punch thrown in response to an opponent's attack, often while evading or immediately after blocking.
He dodged the left and landed a right counterpunch.
automatic reciprocal upload slot
Specialized Internet/P2P use for automatically responding by giving an upload slot to someone who lets you download; likely unfamiliar outside that context.
In a P2P context, カウンター refers to automatically giving an upload slot back to the other user.
He always sits at the counter and drinks beer.
I received my boarding pass at the check-in counter.
They aim for a counterattack off the opponent's mistake.
The boxer quickly threw a counterpunch.
The page's visitor counter went over ten thousand.
counter stool; bar stool