Definition of slow lane noun from the Oxford Advanced Learner's Dictionary

 

slow lane

 noun
noun
BrE
 
; NAmE
 
[singular] Types of road
 
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  • the part of a major road such as a motorway or interstate where vehicles drive slowest See related entries: Types of road
  • Idioms not making progress as fast as other people, countries, companies, etc.
    See the Oxford Advanced American Dictionary entry: slow lane