Rule/ruːl/ Definition 1 of 5Pro Tip 1/3Expect Consequences Rules imply that not following them will result in some form of sanction or penalty. If you break the rule, you'll likely face a fine. Pro Tip 2/3Social Order Rules are essential in various contexts to maintain order and ensure fairness. Traffic rules keep the roads in order. Pro Tip 3/3Not Laws Distinguish rules from laws; rules are guidelines which might not have legal standing. Classroom rules are set by the teacher, not the government.