1. to forbid by law, rule, or other authority
2. to prevent or make impossible

Examples

• The law prohibits smoking in public buildings.
• School rules prohibit students from using phones during class.
• The high cost prohibits many families from taking vacations.
• City ordinances prohibit parking on this street overnight.
• Bad weather prohibited the flight from taking off.
• The contract prohibits employees from sharing confidential information.
• Heavy traffic prohibited us from arriving on time.