noun
weapon
WEP-uhn/ˈwepən/
An object or other means used to attack, defend, or gain an advantage.
The sword is a weapon with a pointed blade and guarded grip.

Etymology
Old English wæpen named an instrument of fighting or defense. The meaning broadened to include things not designed for combat but usable in a contest or struggle.
In context
another relatively simple weapon would be the sling the sling is essentially cordage with a pouch in the middle it is used to throw projectiles much farther and faster than an arm can
More examples
- The officer asked him to put down the weapon.
- They used economic pressure as a weapon in the dispute.
- All weapons had to be surrendered before entry.
Forms
weapon · weapons
weaponry noun — Weapons considered as a group.
Similar words
- arm
- Usually a conventional fighting implement, often used in the plural.
- instrument
- Much broader; becomes a weapon only through its use.