非ひ常じょう階かい段だん

noun

emergency staircase; fire escape

Refers to an external or internal staircase designated for emergency evacuation, commonly found in buildings.

• 火か事じのときは非ひ常じょう階かい段だんを使つかってください。

  Please use the emergency staircase in case of fire.

• このビルには非ひ常じょう階かい段だんが二ふたつある。

  This building has two fire escapes.