Parley

"Damn to the depths whatever muttonhead thought up 'parley'!" "That would be the French."

- _____ And Jack Sparrow

Parley was a right set down in the pirate's code that allowed a pirate or other individual (on rare occations, of course. i.e. Ellizibeth Swann) to be taken by a crew member to the captain of their ship to descuss a treaty, negotiation, etc.