What does おしまい mean?
おしまい is a Japanese noun meaning “the end; closing; being done for” in English. It can also be translated as “that's it” depending on context. It is written as おしまい in hiragana, and oshimai in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
今日はこれでおしまいにしてはどうでしょう。
What do you say to calling it a day?