1
- a small device that releases a spring or catch and so sets off a mechanism, especially in order to fire a gun（枪械等的）扳机; 启动装置：
he pulled the trigger of the shotgun.
他扣动了猎枪的扳机。
1.1
- an event or thing that causes something to happen引起反应的事（或物）; 触发因素：
the trigger for the strike was the closure of a mine.
罢工是由关闭矿区引发的。
with obj.(常作be triggered)
1- cause (an event or situation) to happen or exist引发, 引起, 促使：
an allergy can be triggered by stress or overwork.
紧张或工作过度可能引发过敏症。
1.1
- cause (a device) to function开动（装置）。
短语
quick on the trigger
- quick to respond行动迅速的, 反应快的。
派生词
triggered
adjective词源
early 17th cent.: from dialect tricker, from Dutch trekker, from trekken 'to pull'.