A more thorough explanation:

A defense lawyer, also known as a defense attorney or defense counsel, is a legal professional who represents a defendant in a civil or criminal case.

For example, if someone is accused of a crime, a defense lawyer will work to protect their rights and ensure they receive a fair trial. The defense lawyer will investigate the case, gather evidence, and argue on behalf of their client in court.

Another example is in a civil case, where a defense lawyer may represent a company or individual who is being sued. The defense lawyer will work to defend their client against the claims made by the plaintiff.

Overall, a defense lawyer's main goal is to protect their client's interests and ensure they receive a fair trial or settlement.