1
to be shut;to close;to be closed
esp. 閉まる
あいにく店は閉まっていた。
Unfortunately, the store was closed.
2
only applies to
締まる
to be firm (of a body, face, etc.);to be well-knit
ドアが閉まっていたので、入ることが出来なかった。
The door was locked, so I couldn't get in.
3
to be locked
4
to tighten;to be tightened
5
to become sober;to become tense
Other forms
締まる 【しまる】 · 緊まる 【しまる】 (rarely used kanji form)