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Definition of weapon noun from the Oxford Advanced American Dictionary

      

    weapon

     noun
    noun
    NAmE//ˈwɛpən//
     
     
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  1. 1an object such as a knife, gun, bomb, etc. that is used for fighting or attacking someone nuclear weapons a lethal/deadly weapon The police still haven't found the murder weapon. He was charged with carrying an offensive weapon. Topic CollocationsWar and Peacestarting a war
    • declare/wage war (on somebody/something)
    • go to war (against/with somebody)
    • cause/spark/provoke/foment/quell unrest
    • incite/lead/crush/suppress a revolt/rebellion
    • launch/mount/carry out a surprise/terrorist attack
    • prevent/halt/represent an escalation of the conflict
    • be torn apart by/be on the brink of civil war
    • enter/invade/occupy somebody's territory
    • lead/launch/resist/repel an invasion
    military operations
    • adopt/develop/implement/pursue a military strategy
    • carry out/execute/perform military operations/maneuvers
    • send/deploy/station/pull back/withdraw troops
    • go on/fly/carry out a reconnaissance/rescue mission
    • train/equip/deploy army/military/combat units
    • lead/launch/conduct an (air/airborne/amphibious) attack/a surprise attack (on somebody); an assault/a raid (on somebody)
    • employ/use guerrilla tactics
    • conduct/wage biological/guerrilla warfare
    • fight/crush/defeat the rebels/the insurgency
    • suffer/inflict a crushing defeat
    • achieve/win a decisive victory
    • halt/stop the American/German advance
    • order/force a retreat
    fighting
    • join/serve in the Army/Navy/Air Force/Marines/Coast Guard/reserves
    • be/go/remain/serve on active duty
    • do/complete/return from a tour of duty
    • be sent to the front (line)
    • attack/strike/engage/defeat/kill/destroy the enemy
    • witness/see/report/be engaged in heavy fighting
    • call for/be met with armed resistance
    • come under heavy/machine-gun/mortar fire
    • fire a machine gun/mortar shells/rockets (at somebody/something)
    • shoot a rifle/a pistol/bullets/missiles
    • launch/fire a(n) cruise/ballistic/anti-tank missile
    • use biological/chemical/nuclear weapons
    • inflict/suffer/sustain heavy losses/casualties
    • be hit/killed by enemy/friendly/artillery fire
    • become/be held as/be taken as a prisoner of war
    civilians in war
    • harm/kill/target/protect innocent/unarmed civilians
    • cause/avoid/limit/minimize civilian casualties/collateral damage
    • impose/enforce/lift a curfew
    • engage in/be a victim of ethnic cleansing
    • be sent to a concentration/an internment camp
    • accept/house/resettle/turn away refugees fleeing from war
    • fear/threaten military/violent reprisals
    • commit/be accused of war crimes/crimes against humanity/genocide
    making peace
    • make/bring/win/achieve/maintain/promote peace
    • call for/negotiate/broker/declare a ceasefire/a temporary truce
    • sign a ceasefire agreement
    • call for/bring/put an end to hostilities
    • demand/negotiate/accept the surrender of somebody/something
    • establish/send (in) a peacekeeping force
    • negotiate/conclude/ratify/sign/accept/reject/break/violate a peace treaty
    see biological weapon, chemical weapon
  2. 2something such as knowledge, words, actions, etc. that can be used to attack or fight against someone or something Education is the only weapon to fight the spread of the disease. Guilt is the secret weapon for controlling children.
  3. Idioms
    be a double-edged sword/weapon
     
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    to be something that has both advantages and disadvantages
See weapon in the Oxford Advanced Learner's Dictionary