自じ陣じん

noun

one's own ground; one's own position; one's own half/area of the field

Used in sports (soccer, rugby, etc.) and military/strategic contexts to refer to the side or territory one defends. Often contrasted with 敵陣 (enemy territory).

• サッカーでは、自じ陣じんでボールを奪うばわれないように注ちゅう意いする。

  In soccer, be careful not to lose the ball in your own half.

• 敵てきを自じ陣じんに引ひき込こんでから反はん撃げきした。

  They lured the enemy into their own territory and then counterattacked.