堅けん塞さい固こ塁るい

Meanings

1

impregnable fortress; heavily guarded fort

yojijukugo (four-character idiom)rare term

Rare yojijukugo describing a fortress so solidly defended that it cannot be breached. Used in literary or historical contexts.

この城しろはまさに堅けん塞さい固こ塁るいで、敵てきは容よう易いに近ちかづけなかった。
This castle was truly an impregnable fortress, and the enemy could not easily approach it.
彼かれの守しゅ備びは堅けん塞さい固こ塁るいのごとく、相あい手てチームは一いっ点てんも取とれなかった。
His defense was like an impregnable fortress, and the opposing team couldn't score a single point.