"device by means of which a catch or spring is released and a mechanism set in action," 1650s, earlier tricker (1620s), from Dutch trekker "trigger," from trekken "to pull" (see trek). Tricker was the usual form in English until c. 1750. Trigger-happy is attested from 1942.
trigger (v.)
1930, from trigger (n.). Related: Triggered; triggering.
例文
1. Stress may act as a trigger for these illnesses.
圧力がこれらの病気を引き起こす原因になる可能性があります。
2.A man pointed a gun at them and pulled the trigger .
男が銃を持って彼らを指し、引き金を引いた。
3.They were gunned down by members of the trigger -happy National Guard.
彼らは銃を乱射した国民防衛隊の兵士たちに射殺された。/
4.Unresolved or unacknowledged fears can trigger sleepwalking.
心に残っているか、知られていない恐怖が夢遊病を引き起こす可能性がある。
5.A wide range of emotionally stressful events may trigger a relapse.