JLPT N1
開口
A physical opening or aperture, or opening one’s mouth to start speaking.
Readings
Other forms
開口する suru verb
1 Noun
An Opening / Aperture
Refers specifically to a gap, hole, or passage created in a structure or mechanism, often used in architectural and scientific contexts.
Example
壁 に 換気 の ため の 開口 を 設けた 。
We made an opening in the wall for ventilation.
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2 Noun, Suru verb
Starting to Speak
Describes the literal act of opening the mouth to talk or the moment one begins a speech.
Usage notes & examples
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