JLPT N1 Advanced
釘
A physical nail or spike, also used idiomatically to signify a firm warning.
Readings
Other forms
クギ in technical contexts or for emphasis
1 Noun
Nail / Spike
A slender metal rod with a pointed end used for fastening wood or other construction materials.
Example
壁 に 釘 を 打って 、 絵 を 飾った 。
I hammered a nail into the wall and hung a picture.
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2 Verb Phrase
A Firm Warning (Idiomatic)
A metaphorical usage emphasizing the act of ensuring compliance or preventing future excuses.
Usage notes & examples
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