A more thorough explanation:

Definition: A runner can have different meanings depending on the context:

1. Legal Runner: An employee in a law office who delivers papers between offices and files papers in court.
2. Personal-Injury Runner: A person who solicits personal-injury cases for a lawyer. This person is also known as a capper.
3. Smuggler: A person who illegally transports goods or people across borders or checkpoints.
4. Slang: In British English, runner can also mean an escape, flight from something, or a voluntary disappearance.

Examples:

• A legal runner is responsible for delivering important documents to different offices and filing them in court. They are an essential part of the legal team.
• A personal-injury runner may approach people who have been in accidents and offer to connect them with a lawyer who can help them get compensation for their injuries.
• A smuggler may transport drugs, weapons, or people across borders for profit. This is illegal and can result in serious consequences.
• If someone says they are going to "do a runner," it means they are planning to escape or disappear, often to avoid paying a debt or facing consequences for their actions.

The examples illustrate how the term "runner" can have different meanings depending on the context. It is important to understand the specific meaning of the term in order to use it correctly and avoid confusion.