Longman Dictionary of Contemporary English homepage

restriction

noun
     
re‧stric‧tion S2 W3
1 [countable] a rule or law that limits or controls what people can do
restriction on
restrictions on immigration
impose/place restrictions on something
The law imposed new financial restrictions on private companies.
strict/tough/tight restriction
tougher restrictions on alcohol advertising
lift/remove a restriction
Restrictions on trade were lifted.
2 [uncountable] when you restrict the size, amount, or range of something

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