etymologeek.com dictionary
English word weapon comes from Proto-Germanic *wēpną ("weapon"), of unknown origin, possibly from Proto-Indo-European *wēbnom.

Weapon etymology history?

Weapon detailed word origin explanation

Dictionary entryLanguageDefinition
*wēbnom Proto-Indo-European (ine-pro)
*wēpną Proto-Germanic (gem-pro) Weapon.
wǣpen Old English (ca. 450-1100) (ang)
wepen Middle English (1100-1500) (enm) Weapon.
weapon English (eng) (informal, humorous) A tool of any kind.. An instrument of attack or defense in combat or hunting, e.g. most guns, missiles, or swords.. An instrument or other means of harming or exerting control over another.

Words with the same origin as weapon

Descendants of *wōpaz
weaponry weep whoop