say it: CHEK-owt
checkout is a noun meaning "the act of inspecting or verifying". It carries 3 recorded senses.
the act of inspecting or verifying
“they made a check of their equipment”
“the pilot ran through the check-out procedure”
the latest time for vacating a hotel room
“the checkout here is 12 noon”
a counter in a supermarket where you pay for your purchases
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for checkout come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.