blue law
noun/ˈbluː lɔː/
/ˈbluː lɔː/
[usually plural]- (in the US) a law that bans business and certain other activities, such as sports, on SundaysCultureBlue laws were first introduced in colonial New England and were originally printed on blue paper. Now they vary widely in different parts of the US. Although many shops open on Sundays, they often do not sell alcohol on that day because of a blue law.
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blue law