1a long flat-topped fitment across which business is conducted in a shop or bank or refreshments are served in a cafeteria. North American a worktop.
2a small disc used in board games for keeping the score or as a place marker. a token representing a coin. a factor used to give one party an advantage in negotiations:the proposal has become a crucial bargaining counter over prices
3a device used for counting:the counter tells you how many pictures you have taken a person who counts something, for example votes in an election. Physics an apparatus used for counting individual ionizing particles or events.