名詞 firearm:

1. a portable gun
   同義詞：piece, small-arm

1. A small metal knob on the muzzle of a firearm, such as a rifle, used for sighting.
   準星槍炮口上，瞄準用的小圓金屬突起，如來福槍上的準星
2. A usually metal projectile in the shape of a pointed cylinder or a ball that is expelled from a firearm, especially a rifle or a handgun.
   子彈，槍彈從火器中，尤指步槍或手槍中發(fā)射出來的金屬射彈，形狀為尖柱體或球狀
3. A cap or tube containing a small amount of explosive used to detonate the main explosive charge of a firearm or mine.
   雷管，底火，導(dǎo)火線裝有少量爆炸物的帽或管，用來引爆槍炮或地雷、水雷等
4. A device for igniting the charge of a firearm.
   槍機一種用來點燃火器中火藥的裝置

fire.arm

n.（名詞）
A weapon, especially a pistol or rifle, capable of firing a projectile and using an explosive charge as a propellant.
火器：一種能發(fā)射子彈并能用一定量的炸藥作推進劑的武器，尤指手槍或步槍