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I read the word 「引き金」and the definition is:

1 小銃・ピストルなどの、指で引く発射装置の金具。

2 ある事態を引き起こす直接の原因。きっかけ。「授業料の値上げが―となって大学紛争が起こった」 起因(きいん)  ⇒類語辞書で詳しい使い方を調べる 誘因(ゆういん) 動機(どうき) モチーフ

But why is 金 connected to the meaning of "trigger"? How is "pulling money"「引き金」representative of a "gun" or "trigger"?

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1 Answer

up vote 6 down vote accepted

「金」 in 「引き金」 does not represent money but metal. A metal is translated to 「金属」 and metal fittings are translated to 「金具」. 「引き金」 is the part of a gun made of metal for triggering a fire. In English, also trigger means the part of a gun as a noun and to cause something as a verb.




source: デジタル大辞泉 http://dictionary.goo.ne.jp/leaf/jn2/43429/m0u/%E9%87%91%E5%85%B7/

金属 http://dictionary.goo.ne.jp/srch/je/%E9%87%91%E5%B1%9E/m0u/

Word origin for 金: http://gogen-allguide.com/ka/kane.html

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Thinking 金 represented money was a silly mistake of mine. Thanks! –  Chris Harris Oct 3 '12 at 17:28
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