アタッシュケース

noun

attaché case; briefcase

A hard, rectangular case with a handle, often used for carrying documents or a laptop. The word is a direct loan from English/French and is widely understood.

• 彼かれはアタッシュケースを手てに会かい議ぎ室しつに入はいった。

  He entered the conference room with an attaché case in hand.

• 新あたらしいアタッシュケースを買かうなら、軽かるくて丈じょう夫ぶなものがいい。

  If you're buying a new attaché case, a light and sturdy one is best.