締(し)める

to tighten; to fasten; to close

締(し)まる

to tighten; to be closed

締(し)め切(き)る

to close; to meet a deadline

引(ひ)き締(し)める

to tighten; to brace oneself

締(し)め付(つ)ける

to tighten; to constrict

締結(ていけつ)

conclusion; signing (an agreement)

締切(しめきり)

deadline

締切(しめきり)は金曜日(きんようび)です。

The deadline is Friday.

出(で)かける前(まえ)に戸締(とじ)まりを確認(かくにん)してください。

Please check that the doors and windows are locked before going out.