空から薬やっ莢きょう

noun

spent shell casing; empty cartridge

Refers to the metal casing left after a bullet has been fired. Used in military, shooting, and forensic contexts.

• 射しゃ撃げき場じょうには空から薬やっ莢きょうが散ちらばっていた。

  Spent shell casings were scattered around the shooting range.