After five years, you'll be fully 'vested' in the company pension plan. [=you will have earned the right to get a full pension when you retire]
Congress is 'vested' with the power to declare war. = The power to declare war is 'vested' in Congress.
She has a 'vested interest' in seeing the business sold, as she'll make a profit from the sale.
(..) Back when he was Captain of the Black Pearl. What? He failed to mention that. He plays things closer to the vest now. And a hard-learned lesson it was. Three days out, the first mate comes to him and says everything's (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl