Entry 2 senses · 2 variants Webster, 1913 checkout counter · IPA n. n. 01 n. A counter in a supermarket where one pays for one's purchases. 1. A counter in a supermarket where one pays for one's purchases. Syn. checkout. 02 n. a counter in a supermarket where you pay for your purchases. 1. a counter in a supermarket where you pay for your purchases. Syn. checkout.