1. to limit or control the size, amount, or range of something
2. to prevent someone from doing something or going somewhere

Examples

• The new law restricts smoking in public places.
• We need to restrict our spending this month.
• Access to the building is restricted after 6 PM.
• The diet restricts sugar and processed foods.
• Security guards restrict entry to authorized personnel only.
• Bad weather restricted visibility on the highway.
• The company restricts personal internet use during work hours.