()(がね)

ひきがね
noun
trigger (of a gun); trigger (cause)
abstractchange
1. trigger (of a gun)
The lever on a firearm that is pulled to discharge it.
()(がね)()
To pull the trigger.
(じゅう)()(がね)(ゆび)かけた
He put his finger on the gun's trigger.
2. trigger, catalyst, cause
Something that directly causes an event or chain of events to begin. Used figuratively for the starting point of a major change, conflict, or incident.
あの一言(ひとこと)()(がね)になって二人(ふたり)大喧嘩(おおげんか)した
That one remark triggered a huge fight between them.
This incident served as the trigger for the law being revised.
The stock price crash became the trigger for the economic crisis.
Even a small misunderstanding can become the trigger for a major conflict.

Usage

The figurative sense (sense 2) is more common in everyday use than the literal sense. The pattern ~()(がね)なる (~ becomes the trigger) and ~()(がね)なる (more formal) are standard.

Common collocations

  • ()(がね)(): to pull the trigger
  • ()(がね)なる: to become the trigger/catalyst
  • ()(がね)なる: to serve as the trigger (formal)
  • ()(がね): the trigger of ~