IPA: /ˈtʃɛkaʊt/
KK: /ˈtʃɛkaʊt/
The process or place where you pay for items you want to buy, often found in stores or online.
I went to the checkout to pay for my groceries.
Checkout → It is formed from "check" (from Old French *eschequier*, meaning to verify or examine) and "out" (meaning outside or away). The word "checkout" refers to the process of verifying or settling accounts before leaving a place, typically a store or hotel.
Think of 'checking' something to make sure it's correct ('check') before you go 'out' — that's why checkout means to verify before leaving.
No commonly confused words.