Um, maybe the Poseis or the Poseidos
weapon+poison
A tank is a weapon. A tomahawk is a weapon.
poison+weapon poison is snake+weapon(or tools) weapon is tools and human
weapon
She does not need a weapon.
A weapon that can kill.
A weapon that is visible
The meaning of the word nuclear weapon, is a weapon that has a nuclear warhead on it.
Weapon is the answer
What might be matched to a weapon
Depending on your definition of 'weapon' everyone owns a weapon.