1 a thing designed or used or usable for inflicting bodily harm (e.g. a gun or cosh).
2 a means employed for trying to gain the advantage in a conflict (irony is a double-edged weapon).
Derivatives:
weaponed adj. (also in comb.). weaponless adj.
Etymology: OE waeligp(e)n f. Gmc
Useful english dictionary. 2012.