Pronunciation: (trig'ur), [key]
1. a small projecting tongue in a firearm that, when pressed by the finger, actuates the mechanism that discharges the weapon.
2. a device, as a lever, the pulling or pressing of which releases a detent or spring.
3. anything, as an act or event, that serves as a stimulus and initiates or precipitates a reaction or series of reactions.
4. Slang.triggerman.
5. quick on the trigger, Informal.quick to act or respond; impetuous; alert.

1. to initiate or precipitate (a chain of events, scientific reaction, psychological process, etc.): Their small protest triggered a mass demonstration.
2. to fire or explode (a gun, missile, etc.) by pulling a trigger or releasing a triggering device: He accidentally triggered his rifle.

1. to release a trigger.
2. to become active; activate.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Trigèretrigger finger
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