兵器(へいき)

へいき
noun
weapon, arms
1. weapon, arms, weaponry
Instruments or devices used in warfare. Covers a broad range from conventional arms to weapons of mass destruction. A formal, military-oriented term.
核(かく)兵器(へいき)を廃絶(はいぜつ)する。
Abolish nuclear weapons.
兵器(へいき)の開発(かいはつ)に莫大(ばくだい)な予算(よさん)が使(つか)われている。
An enormous budget is being spent on weapons development.
生物(せいぶつ)兵器(へいき)の使用(しよう)は国際法(こくさいほう)で禁止(きんし)されている。
The use of biological weapons is prohibited under international law.

A formal term used primarily in military, political, and news contexts. Different from the homophone 平気(へいき) (calm, unconcerned).

COMMON COLLOCATIONS:

  • 核(かく)兵器(へいき) (nuclear weapons)
  • 生物(せいぶつ)兵器(へいき) (biological weapons)
  • 化学(かがく)兵器(へいき) (chemical weapons)
  • 大量(たいりょう)破壊(はかい)兵器(へいき) (weapons of mass destruction)
  • 兵器(へいき)工場(こうじょう) (arms factory)

DISTINCTIONS:

  • 兵器(へいき): weapons/arms (military context, formal)
  • 武器(ぶき): weapon (broader usage, including figurative — also used in games, everyday speech)
  • 凶器(きょうき): weapon used in a crime (legal/criminal context)

Related Words

Homophone: 平気(へいき)
general
Added 2026.2.18 5:22
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