v.1. To cause something to collapse or fall by striking it with bullets, missiles, or some other projectile; gun down: They shot down the attacking airplanes. The kids released a balloon and shot it down with an air rifle.
2. To kill someone by shooting them; gun down: They stormed into the office and shot down everyone there. The assassin walked up to her target and shot him down.
3. To discredit someone or someone's proposal: Whenever I offer an opinion, they just shoot me down. The council shot down the mayor's proposal. I'm afraid this new evidence shoots down our old theory of what happened.
4. To ruin the aspirations of someone: Their sneers and insults shot me down. A bad critic can shoot down even a very determined artist.
5. To put an end to something; defeat something: The opposition was able to shoot down the proposal. The electorate shot the incumbent down.