Definition of razor noun from the Oxford Advanced American Dictionary

 

razor

 noun
noun
NAmE//ˈreɪzər//
 
 
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  • an instrument that is used for shaving an electric razor a safety/disposable/straight razor compare shaver
  • Idioms
    be on the razor's edge,be on a razor edge
     
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    to be in a difficult situation where any mistake may be very dangerous Social workers operate on the razor's edge.
    See the Oxford Advanced Learner's Dictionary entry: razor