Sentence:  “Yes,” cried Jonathan; “that greenhorn, standing there by the Commodore, is sailing under false colours; he's an impostor, I say; he wears my crown.” / “... I say, Jonathan, my lad, don't pipe your eye now about the loss of your crown; for, look you, we all wear crowns, from our cradles to our graves, and though in "double-darbies" in the "brig," the Commodore himself can't <WSD>unking</WSD> us.” 
Meaning of the word marked with <WSD> tags:  To remove (a king) from power.