アウト

In a sentence

• その試合では彼はアウトになった。

  He was out in the game.

  Here, 'アウト' is used in a sports context to indicate a player is out, such as being out of the play or losing participation in the game.

• その計画はアウトだね、現実的じゃない。

  That plan is out; it's not practical.

  Here, 'アウト' is used to mean 'out' in the sense of disallowed or unfeasible in a colloquial way.

• このドアは非常時のアウト用です。

  This door is for emergency exit.

  In this context, 'アウト' refers to 'exit' indicating a direction or purpose of movement outwards.