From Longman Dictionary of Contemporary Englishfire extinguisherˈfire exˌtinguisher noun [countable] 
TDa metal container with water or chemicals in it, used for stopping small fires
TDa metal container with water or chemicals in it, used for stopping small firesExamples from the Corpus
fire extinguisher• His neck was broken when Sigsworth hit him with a fire extinguisher.• He turned to look out his door window, to make sure some one was posted there with a fire extinguisher. 