阻そ塞さい気き球きゅう

noun

barrage balloon

A large tethered balloon used as a defense against low-flying aircraft by supporting a network of cables.

• 第だい二に次じ世せ界かい大たい戦せん中ちゅう、ロンドン上じょう空くうには多おおくの阻そ塞さい気き球きゅうが浮うかんでいた。

  During World War II, many barrage balloons floated over London.