A piece, as a lever, which is connected with a catch or detent as a means of releasing it; especially (Firearms), the part of a lock which is moved by the finger to release the cock and discharge the piece.

The part of a firearm that is moved manually to cause the firing pin to be released by the sear, the cartridge primer struck, the propellant ignited and the projectile sent on its way.

That part of a firearmâ€(tm)s mechanism which is movable by the finger to cause the firearm to discharge.

You pull this to fire the Airsoft model (usually)

A common alias for the hooked overhand grip. The grip resembles the grip used when holding a gun. See Also: Hooked Overhand Grip

lever that activates the firing mechanism of a gun

release or pull the trigger on; "Trigger a gun"

a part of the mechanism of a gun

The trigger is a small lever that is usually operated with the shooter's index finger. It's purpose is to release the hammer to fire the cartridge.

The device that is pressed to fire a gun.

A short pulse, either positive or negative, that can be used to cause an electronic function to take place.

Something (usually happening quickly) that causes something else to happen (from the thing that you pull to fire a gun - its trigger.)

The part of the gun that is manipulated in order to fire a shot The trigger is present on all guns, no matter what type.  It is the actuator that the shooter uses in order to fire off one or more shots from his/her gun. Airsoft AEG triggers look the same as real-steel triggers on the outside, but on the inside they are very different.  Real-steel triggers usually pull a latch, lever or block inside the gun to cause the shot to be fired.  Airsoft AEG triggers are simply elaborate light-switches, designed to connect or cut electricity from the circuit.  Other types of airsoft trigger vary according to the type of mechanism used.

The device normally operated by the shooter's index finger that initiates the firing of a gun.

A pulse produced by the keyboard or controller used to 'fire' the envelope generators.

Any of a variety of devices which, by acting on a sear, causes the firing mechanism to discharge the weapon. Generally the trigger takes the form of an exterior lug on the firearm.

A trigger is a mechanism that actuates the firing of firearms. Triggers almost universally consist of levers or buttons actuated by the index finger. Rare variations use the thumb or weak fingers to actuate the trigger.