[{"Bold_text": "noun", "List Items": ["a small projecting tongue in a firearm that, when pressed by the finger, actuates the mechanism that discharges the weapon.", "a device, as a lever, the pulling or pressing of which releases a catch or spring.", "anything, as an act or event, that serves as a stimulus and initiates or precipitates a reaction or series of reactions.", "something that evokes the memory of a traumatic experience, setting off an intense negative emotional reaction:This issue of the magazine contains accounts of sexual assault, and may be a trigger for some people.", "Slang. triggerman ."]}, {"Bold_text": "verb (used with object)", "List Items": ["to initiate or precipitate (a chain of events, scientific reaction, psychological process, etc.):Their small protest triggered a mass demonstration.", "to fire or explode (a gun, missile, etc.) by pulling a trigger or releasing a triggering device:He accidentally triggered his rifle.", "to set off a negative emotional reaction in (someone), as by evoking the memory of a traumatic experience, repeatedly raising a sensitive issue, etc.:I missed seeing my mom in the ICU before she died, and imagining her there triggers me every time I see ICU footage on TV."]}, {"Bold_text": "verb (used without object)", "List Items": ["to release a trigger.", "to become active; activate ."]}]