Trigger | Mean of trigger in English Dictionary

/ˈtrɪgɚ/

• Noun
• a lever on a gun that you pull to fire the gun
1. He pulled/squeezed the trigger.
2. Police officers are trained to not be too quick on the trigger. [=eager to fire a gun]
• something that causes something else to happen
1. The faulty wire was the trigger for the explosion.
• Verb
• to cause (something, such as an alarm) to start functioning
1. Smoke triggered the fire alarm.

• to cause (a bomb) to explode
1. The timer was set to trigger the bomb in exactly one hour.
• to cause (something) to start or happen
1. His remarks triggered a public outcry.
2. Certain foods trigger his headaches.
3. The power outage was triggered by heavy rains.