Dec 7, 2016 · The meaning of TRIGGER is a piece (such as a lever) connected with a catch or detent as a means of releasing it; especially : the part of the action moved by the finger to fire a gun.

A trigger is something that sets off a flashback, transporting the person back to the traumatic event.

His remarks triggered a public outcry. Certain foods trigger his headaches. The power outage was triggered by heavy rains.

If something acts as a trigger for another thing such as an illness, event, or situation, the first thing causes the second thing to begin to happen or exist.

To set off; initiate: remarks that triggered bitter debates; allergens that trigger asthma attacks. 2. To fire or explode (a weapon or an explosive charge). [Dutch trekker, from Middle Dutch trecker, from …

anything that causes a reaction: a trigger for the fight. to cause or begin (a chain of events): Inflation triggered unemployment. to fire or explode (a gun, etc.) by pulling a trigger. impetuous: He was too …

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Dec 24, 2025 · Learn how to install a Super Safety trigger system in your AR-15 lower. Step-by-step install instructions, compatibility notes, and tips for a smooth, reliable setup.

Definition of trigger. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

TRIGGER definition: a small projecting tongue in a firearm that, when pressed by the finger, actuates the mechanism that discharges the weapon. See examples of trigger used in a sentence.