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1. To shoot something with bullets so that it falls to the ground. A noun or pronoun can be used between "gun" and "down." Gun down that helicopter before the suspect escapes!
2. To shoot and kill someone. A noun or pronoun can be used between "gun" and "down." You just gunned down an innocent man, and you're going to pay!
gun someone (or an animal) down
Lit. to shoot someone or an animal. Max tried to gun a policeman down. The cop tried to gun down the rabid dog.
1. To cause something to collapse or fall by striking it with bullets, missiles, or some other projectile; shoot down something: The marines gunned down the attacking airplanes. The soldiers gunned the enemy down.
2. To kill or incapacitate someone by shooting: They stormed into the hideout and gunned down all the soldiers there. The assassin tracked down the politicians and gunned them down.