noun
Used in sports contexts to indicate that a ball or player has gone outside the designated playing area. Also used figuratively for something that is beyond acceptable limits.
ボールがアウトオブバウンズになった。
The ball went out of bounds.
その質問はアウトオブバウンズだ。
That question is out of bounds.
Spelling with interpuncts, sometimes used for clarity or emphasis.
Borrowed from English 'out of bounds'.