Pronunciation (UK) IPA (key): /ˈkʌstəmə/ (US) IPA (key): /ˈkʌstəmɚ/ Audio (UK)(file) Noun Singular customer Plural customers (countable) A customer is a person who pays money for goods or services. The restaurant had to close because there weren't enough customers. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads