1. to give permission for something to happen or someone to do something
2. to make something possible or provide the opportunity for something
3. to set aside or provide a specific amount of time, money, or space for something

Examples

• The teacher allows students to use calculators during the test.
• This software allows you to edit photos easily.
• The new schedule allows more time for lunch.
• Please allow three hours for the journey.
• The company allows employees to work from home.
• The wide doorway allows wheelchair access.
• I always allow extra money for unexpected expenses.