Definition of by-law noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈbaɪ lɔː//
    ; NAmE NAmE//ˈbaɪ lɔː//
    (also bye-law)
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  1. 1(British English) a law that is made by a local authority and that applies only to that area
  2. 2(North American English) a law or rule of a club or company
  3. Word OriginMiddle English: probably from obsolete byrlaw ‘local law or custom’, from Old Norse býjar, genitive singular of býr ‘town’, but associated with by.