A more thorough explanation:

Definition: A longshoreman is a worker who is employed in a port to load and unload ships. They work on the wharves and are responsible for moving cargo from the ship to the dock and vice versa.

Example: John is a longshoreman who works at the port of Los Angeles. He spends his days lifting heavy crates and containers from the ships and placing them onto the dock. He also loads cargo onto the ships that are leaving the port.

Explanation: The example illustrates the definition of a longshoreman by showing how they are responsible for the physical labor of moving cargo from the ship to the dock and vice versa. It also shows that they work in a specific location, which is the port, and that their job is essential for the transportation of goods by sea.