trigger
🇺🇸
/ˈtrɪɡər/
🇬🇧
/ˈtrɪɡə(r)/
to cause something to start happening
Eating nuts can trigger a strong allergic reaction.
to start a device working
The smoke will trigger the fire alarm.
to cause someone to feel upset by reminding them of bad memories
Loud noises trigger my anxiety because they remind me of the accident.
the part of a gun you pull to fire it
He carefully pulled the trigger to fire the gun.
something that causes a reaction to happen
The factory closure was the trigger for the workers' strike.