A more thorough explanation:

Definition: To annul, eliminate, or destroy, especially an ongoing practice or thing.

Examples:

• The government decided to abolish the death penalty.
• The company decided to abolish its outdated dress code policy.
• The school board voted to abolish the use of standardized testing.

These examples illustrate the definition of abolish because in each case, a practice or thing is being eliminated or destroyed. The death penalty, dress code policy, and standardized testing were ongoing practices that were deemed unnecessary or harmful and were therefore abolished.