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Definition of safety valve noun from the Oxford Advanced Learner's Dictionary

safety valve

noun
 
/ˈseɪfti vælv/
 
/ˈseɪfti vælv/
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  1. a device that lets out steam or pressure in a machine when it becomes too greatTopics Engineeringc2
  2. a way of letting out feelings of anger, excitement, etc. without causing harm
    • Exercise is a good safety valve for the tension that builds up at work.
See safety valve in the Oxford Advanced American Dictionary
previously
adverb
 
 
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