曳えい光こう弾だん

noun

tracer bullet; star shell; flare bomb

Military term for a projectile that leaves a visible trail or illuminates an area. Covers tracer ammunition, illuminating shells, and flare bombs.

• 曳えい光こう弾だんが夜よ空ぞらに弧こを描えがいた。

  A tracer bullet drew an arc across the night sky.

• 戦せん場じょうでは、曳えい光こう弾だんが目もく標ひょうの位い置ちを示しめすために使つかわれる。

  On the battlefield, tracer rounds are used to indicate the target's position.