Trigger
WordNet
noun
(1) An act that sets in motion some course of events
(2) Lever that activates the firing mechanism of a gun
(3) A device that activates or releases or causes something to happen
verb
(4) Release or pull the trigger on
"Trigger a gun"
(5) Put in motion or move to act
"Trigger a reaction"
"Actuate the circuits"
WiktionaryText
Etymology
Originally , from , from .
Noun
- A finger-operated lever used to fire a gun.
- A similar device used to activate any mechanism.
- An event that initiates others, or incites a response.
- A pulse in an electronic circuit that initiates some component.
- An SQL procedure that may be initiated when a record is inserted, updated or deleted; typically used to maintain referential integrity.