締しめ切きり

noun

deadline; closing date; cut-off

The common modern sense: the final time by which applications, manuscripts, payments, submissions, etc. must be received. Can also refer to the act or point of closing acceptance.

• レポートの締しめ切きりは来らい週しゅうの月げつ曜よう日びです。

  The deadline for the report is next Monday.

• 応おう募ぼの締しめ切きりを一いっ週しゅう間かん延えん長ちょうしました。

  We extended the application deadline by one week.

noun

closing up; keeping closed

Only when written 閉め切り / 閉切り

Refers to the act or state of closing something off, especially doors, windows, or a room. The spelling 閉め切り makes this physical closing sense clearer, though It is a search-only form.

• 暑あつい日ひは部屋へやの閉しめ切きりを避さけ、こまめに換かん気きしてください。

  On hot days, avoid keeping the room closed up and ventilate it frequently.

noun

cofferdam

Civil-engineering term for a temporary watertight enclosure or barrier used to keep water out of a work area. Often written compactly as 締切 in technical contexts.

• 川かわの中なかに締しめ切きりを設もうけて、橋きょう脚きゃくの工こう事じを行おこなった。

  They built a cofferdam in the river and carried out the pier construction.