Definition of high beams noun from the Oxford Advanced American Dictionary

 

high beams

 noun
noun
 
[plural]
 
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  • the lights on a car when they are pointing a long way ahead, not down at the road Turn on your high beams. compare low beams
  • Idioms
    on high beam
     
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    (of the lights on a car) pointing a long way ahead, not down at the road
    See the Oxford Advanced Learner's Dictionary entry: high beams