trigger

Meanings

• lever that activates the firing mechanism of a gun
• a device that activates or releases or causes something to happen
• an act that sets in motion some course of events
• put in motion or move to act
  • "trigger a reaction"
• release or pull the trigger on
  • "Trigger a gun"

Synonyms

activate, actuate, gun trigger, induction, initiation, set off, spark, spark off, touch off, trigger off, trip