The school has a strict rule about attendance.

The country is ruled by an oligarchical government.

As a rule, students are not allowed to use their phones during class.

I will rule out that option.

The ruling party won the election

I used a slide rule to calculate the measurements.

The city council is discussing the implementation of home rule.

The ground rule for this stadium is that any ball hit into the stands is considered a home run.

During the labor dispute, the employees decided to engage in a work-to-rule campaign.

The danger of mob rule is that it can lead to the suppression of individual rights.