A more thorough explanation:

Definition: The warden of the cinque ports (pronounced "singk ports") was a magistrate who had authority over the five cinque ports. This office was created to protect the coasts against enemies, following the Roman policy. The Lord Warden, as the warden was formally called, presided over the Court of the Lord Warden of the Cinque Ports. This court was established in the 14th century and had various powers, including civil, equity, and admiralty jurisdiction. In the past, the warden was also known as the guardian of the cinque ports.

Example: The warden of the cinque ports was responsible for maintaining the security of the five ports, which were Dover, Hastings, Hythe, New Romney, and Sandwich. He had the power to call upon the inhabitants of these ports to defend them against any enemy attacks. For example, during the Spanish Armada in 1588, the warden of the cinque ports, Lord Cobham, led the defense of the ports against the Spanish fleet.

Explanation: This example illustrates how the warden of the cinque ports had the responsibility to protect the ports against any enemy attacks. During the Spanish Armada, Lord Cobham was able to use his authority to call upon the inhabitants of the ports to defend them against the Spanish fleet. This shows how the warden had the power to mobilize the people and resources of the ports to protect them from external threats.