鍵かぎアカウント

noun

private account; locked account

Internet slang for a social media account (especially Twitter/X) whose posts are only visible to approved followers. Often abbreviated as 鍵アカ.

• 彼かれのツイートは鍵かぎアカウントだから、フォローしないと見みられない。

  His tweets are from a private account, so you can't see them unless you follow him.