rimfire

a. (子弹)边缘发火的,(火器)发射边缘发火弹的 n. 边缘发火弹

词形变化

rimfires 复数 rimfires

释义与例句

n.
  1. 1.

    A type of firearm cartridge where the primer is in the back rim, rather than a central primer cap. They are cheap to produce but cannot be reloaded with powder.

词源

From rim + fire.

来源：wiktionary