射しゃ線せんしゃせんMeanings1nounline of fireRefers to the path a projectile will take from a firearm; used in military, shooting, and safety contexts.射しゃ線せんに入はいらないでください。Please stay out of the line of fire.警けい官かんは射しゃ線せんを確かく保ほした。The police officer secured the line of fire.