1 a small projecting lever that activates the firing mechanism of a firearm
2 (Machinery) a device that releases a spring-loaded mechanism or a similar arrangement
3 any event that sets a course of action in motion
4 usually foll by: off to give rise (to); set off
5 to fire or set in motion by or as by pulling a trigger
(C17 tricker, from Dutch trekker, from trekken to pull; see trek)
English Collins Dictionary - English Definition & Thesaurus
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