In my opinion, you are absolutely correct. It is a tool or object THAT CAN be used as a weapon just as anything else, like for instance a pencil.
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A weapon is a tool used to cause harm. A gun has no intended purpose other than the causing of harm; it could conceivably be used as a makeshift hammer, I suppose, and some guns have tactical rails which can be used to attach sights and flashlights, but fundamentally, the purpose of a gun is to cause harm, or demonstrate the power of the bearer of the gun to harm others. Thus, a gun IS a tool, but also specifically a weapon.
Spear, harpoon, knife, dagger, rock, ...
Butchers knife
a small Cuban with a attitude and a butchers knife
it pierced it like a knife through a buttery chicken.
ya probably with a butchers knife or sum sisers
A Butchers Knife Or A Food Processor.
A ballistic knife is a weapon which fires a knife blade.
Juggalo (Insane Clown Posse Fan)
Macbeth used a sword as his weapon.
Kurībā
Most butchers will use a boning knife to break down a subprimal into a steak or retail cut.
a knife