checker
🇺🇸
/ˈtʃekər/
🇬🇧
/ˈtʃekə(r)/
A person who manages the cash register at a store.
The checker at the grocery store quickly scanned our items and told us the total.
A program that checks for errors in documents or on computers.
I always use a checker to make sure my essay is free of any mistakes before I submit it.
A person who examines things to ensure they meet certain standards.
The checker on the factory line made sure that each toy was in good condition before it was packed.