1. the act of forbidding something by law, rule, or other authority
2. a law or rule that forbids something
3. the period from 1920 to 1933 when the production and sale of alcoholic beverages was illegal in the United States
Usage: historical; often capitalized

Examples

• The school enforced a strict prohibition on cell phone use during class.
• There is a prohibition against smoking in all public buildings.
• The city council voted to lift the prohibition on street vendors.
• During Prohibition, many people made illegal alcohol at home.
• The prohibition of certain chemicals has helped protect the environment.
• Religious prohibitions often guide people’s dietary choices.
• The prohibition against parking here is clearly posted on the sign.