regulation
noun
ˌreɡjuˈleɪʃn 
ˌreɡjuˈleɪʃn 
1 [countable, usually plural] an official rule made by a government or some other authoritytoo many rules and regulationsfire/safety/building, etc. regulationsto comply with the regulationsUnder the new regulations spending on office equipment will be strictly controlled.the strict regulations governing the sale of weapons2 [uncountable] controlling something by means of rulesthe voluntary regulation of the press