English Dictionary

An instrument of offensive of defensive combat; something to fight with; anything used, or designed to be used, in destroying, defeating, or injuring an enemy, as a gun, a sword, etc.
Source : opted (171974)  - auto

Fig.: The means or instrument with which one contends against another; as, argument was his only weapon.
Source : opted (171975)  - auto

A thorn, prickle, or sting with which many plants are furnished.
Source : opted (171976)  - auto