weapon

American  

[wep-uhn] / ˈwɛp ən /

noun

1. any instrument or device for use in attack or defense in combat, fighting, or war, as a sword, rifle, or cannon.

2. anything used against an opponent, adversary, or victim.

   the deadly weapon of satire.

3. Zoology. any part or organ serving for attack or defense, as claws, horns, teeth, or stings.

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verb (used with object)

1. to supply or equip with a weapon or weapons.

   to weapon aircraft with heat-seeking missiles.

weapon British  

/ ˈwɛpən /

noun

1. an object or instrument used in fighting

2. anything that serves to outwit or get the better of an opponent

   his power of speech was his best weapon

3. any part of an animal that is used to defend itself, to attack prey, etc, such as claws, teeth, horns, or a sting

4. a slang word for penis

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Other Word Forms

• outweaponed
  adjective
• superweapon
  noun
• unweaponed
  adjective
• weaponed
  adjective
• weaponless
  adjective

Etymology

Origin of weapon

First recorded before 900; Middle English wepen, Old English wǣpen; cognate with German Waffe, Old Norse vāpn, Gothic wēpna (plural)

Explanation

A weapon is something used to hurt someone. Soldiers use weapons like guns and even sometimes use "weapons of mass destruction" — like bombs. In school, the only weapon you should use is a spitball. A solider engaging in battle needs a weapon, as does a police officer defending herself against a violent attacker. Some weapons are specially designed for killing or injuring, such as guns and crossbows, while in other cases an ordinary object, like a stick, can be used as a weapon. The Old English root is wæpen, "instrument of fighting or defense." The spelling is tricky, and most people just have to memorize the ea in weapon.

Example Sentences

Burn's giant stature would make him an obvious weapon for Tuchel at set pieces, but he has looked uncomfortable in possession and against mobile forwards for England.

From BBC • May 22, 2026

The new risk is different and, in some ways, harder to manage: It assumes that civilian power infrastructure becomes a military asset, a hostage or a weapon simply by existing in a conflict zone.

From Salon • May 21, 2026

The New York Times has previously reported that the school was hit by a US Tomahawk cruise missile, a weapon which Iran does not possess.

From Barron's • May 19, 2026

After the summit, the White House emphasized that both sides shared an interest in keeping the Strait of Hormuz open and preventing Iran from obtaining a nuclear weapon.

From The Wall Street Journal • May 18, 2026

"You turned the greatest weapon of all creation into a gardening tool?"

From "City of the Plague God" by Sarwat Chadda

Related Words

• ammunition
• bomb
• cannon
• firearm
• gun
• knife
• machete
• machine gun
• missile
• nerve gas
• pistol
• revolver
• rifle
• shotgun
• sword
• tear gas