Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

safety valve

noun [C] (MACHINE)
 
 

Definition

a small part on a machine, which allows steam or gas to escape if the pressure inside becomes too highMachine parts
(Definition of safety valve noun (MACHINE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of safety valve