firearm

noun

FY-ur-arm/ˈfaɪəɹˌɑː(ɹ)m/

1 meaning of firearm

1
nouncountable
A personal weapon that uses an explosive charge of powder to drive a projectile, often made of lead.
The hunter carefully unloaded his firearm before crossing the fence.
Modern firearms can fire several rounds in a single second.
Similargun, weapon

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Origin

Formed from "fire," in the sense of discharging a projectile, plus "arm," meaning a weapon.