WordWeb Online

1. Lever that activates the firing mechanism of a gun
   - gun trigger
    
2. A device that activates, releases or causes something to happen
    
3. An act that sets in motion some course of events
   - induction, initiation

1. Put in motion, initiate (a device, reaction, circuit, etc)
   "trigger a reaction";
   - actuate, activate, set off, spark off, spark, trigger off, touch off
    
2. Release or pull the trigger on
   "Trigger a gun"
    
3. Cause to start, provoke or initiate (usually something negative or violent)
   "his remarks triggered condemnation"; "trigger a huge argument";
   - kick off [informal], touch off, spark off, spark, set off

Derived forms: triggered, triggering, triggers

Type of: causation, device, initiate, lever, pioneer

Part of: gun

Encyclopedia: Trigger