by ‧ law /ˈbaɪlɔː $ -lɒː/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Origin: Probably from an unrecorded Old Norse bylög , from byr 'town' + lög 'law' ]
1 . a law made by a local government that people in that area must obey
2 . American English a rule made by an organization to control the people who belong to it