1. a weapon consisting of a metal tube, with mechanical attachments, from which projectiles are shot by the force of an explosive; a piece of ordnance.
2. any portable firearm, as a rifle, shotgun, or revolver.
3. a long-barreled cannon having a relatively flat trajectory.
4. any device for shooting something under pressure: a paint gun; a staple gun.
5. a person whose profession is killing; professional killer: a gangland gun.
6. a member of a shooting party.
7. electron gun.
8. Slang.
• (esp. in baseball) a player’s throwing arm.
• the biceps or triceps of the arms: his big, muscular guns.

9. to shoot with a gun (often followed by down): The guards gunned down the fleeing convict.
10. to cause (an engine, vehicle, aircraft, etc.) to increase in speed very quickly by increasing the supply of fuel.

11. to hunt with a gun.
12. to shoot with a gun.

13. gun for,
• to seek with intent to harm or kill.
• to seek; try earnestly to obtain: He is gunning for a raise.

14. to put into motion or speed up: We gave the motor the gun and drove off.
15. jump the gun, Slang.
• to begin a race before the starting signal.
• to begin prematurely; act too hastily.
16. to frustrate or prevent someone from accomplishing a plan: Our competitors planned a surprise reduction in their rates, but we discovered it and were able to spike their guns.
17. to maintain one's position in the face of opposition; stand firm: They stuck to their guns and refused to submit.
18. under pressure, as to meet a deadline or solve a problem: We're all under the gun with these new sales quotas.

1. past participle of gin³.

1. gunnery.

• a weapon with a metallic tube or barrel from which a missile is discharged, usually by force of an explosion. It may be portable or mounted. In a military context the term applies specifically to a flat-trajectory artillery piece
• (as modifier)
2. the firing of a gun as a salute or signal, as in military ceremonial
3. a member of or a place in a shooting party or syndicate
4. any device used to project something under pressure
5. an armed criminal; gunman
6. Australian and NZ slang
• an expert
• (as modifier)
7. to act or function with great speed, intensity, etc
8. jump the gun or beat the gun
• (of a runner, etc) to set off before the starting signal is given
• to act prematurely
9. spike someone's guns See spike 1 (def. 15)
10. to maintain one's opinions or intentions in spite of opposition

11. to shoot (someone) with a gun
12. to press hard on the accelerator of (an engine)
13. to hunt with a gun

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