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to be shut; to close; to be closed
to be firm (of a body, face, etc.); to be well-knit
to be locked
to tighten; to be tightened
to become sober; to become tense
このドアはきちんと締まっていないみたいだ。
It looks like this door isn't closed properly.
窓が風の力で締まってしまった。
The window was shut by the force of the wind.
店が締まる前に急ごう。
Let's hurry before the shop closes.