breatherPronunciation: /ˈbriːðə/Translate breather | into French | into German | into Italian Definition of breather noun 1a person or animal that breathes in a particular way:a heavy breather 2 informal a brief pause for rest:let’s take a breather 3a vent or valve to release pressure or to allow air to move freely around something: a cask breather a crankcase breather [as modifier]:a breather pipebreather in other Oxford dictionaries Definition of breather in the US English dictionary