cashier's counter; checkout counter
Refers to the physical counter where payment is made, such as in a shop, restaurant, or ticket office.
Please pay at the cashier's counter over there.
There was a long line at the checkout counter.
Compound of 勘定 (かんじょう, 'calculation, bill') and 場 (ば, 'place'). The exact historical derivation is uncertain, but the word transparently means 'place for settling accounts'.