Pronunciation (UK) IPA (key): /ˈlɒk.ə(r)/ (US) IPA (key): /ˈlɑ.kɚ/ (AU) IPA (key): /ˈlɔk.ə(r)/ Audio (UK)(file) Noun Singular locker Plural lockers (countable) A locker is a cabinet to keep things in, usually with a lock. I put my jacket in my locker when I get to work. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads