tracer bullet

Noun

Bullets which include a pyrotechnic component, allowing their path through the air to be seen.

Japanese Meaning

発光弾：内部に発光する成分を含み、射出後に弾道が視認できる弾丸。

A tracer bullet arced through the night sky, leaving a glowing streak that marked the target's trajectory.

曳光弾が夜空に弧を描いて飛び、標的の軌跡を示す光の筋を残した。

Sense（1）

Bullets which include a pyrotechnic component, allowing their path through the air to be seen.

tracer bullets

（ plural ）