In "One Piece", what does "the Pirate King" mean to the captain of the Straw Hat Pirates?

In the world of One Piece, the title of Pirate King holds the ultimate significance, and to the Captain of the Straw Hat Pirates, it symbolizes the embodiment of freedom. Throughout their journey, the Straw Hat Pirates constantly fight against oppressive powers, seeking to break free from any form of tyranny and authoritarian rule. The Pirate King represents the ultimate expression of this freedom, as whoever holds this title is considered the person who has conquered the Grand Line, charted the unexplored territories, and achieved absolute freedom to live as they please. This pursuit of freedom is the driving force behind the Captain of the Straw Hat Pirates and their relentless determination to sail the seas, facing countless challenges and adventures along the way.