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.
(..) .. I'm putting the finaI touches on my Iatest invention. .. I caII it The ImpermeabIe. .. It's a vest. When worn under cIothing... .. ...it can stop any buIIet, fired even at cIose range. .. -Is that so? -But I haven't tested it fuIIy yet. .. (..)1999 Wild Wild West