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.
(..) Uh, I just, I don't want to end up being a Hooli lifer. You know, working here forever. Yeah, working for the most innovative company in the world, with top pay and vested stock options. I can totally see why you wouldn't want that. Yeah, you're like an artist. An entrepreneur. An iconoclast. (..)2014 TvShow: Silicon Valley Title: Minimum Viable Product Season: 1 Episode 1
(..) Mayday! Mayday! Bringing it down and out! Ten thousand feet! Masks off! Masks off! Chuck! Life vest! Chuck! Chuck, stay there! Where's your life vest? Ditching switch on! I've got visual! (..)2000 Cast Away
(..) .. 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