兵器(へいき)

へいき
noun
weapon, arms
formaltechnical
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

Similar words

  • 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)
Compare: 武器(ぶき) (weapon (broader usage, including…)
Compare: 凶器(きょうき) (weapon used in a crime)
Compare: 軍備(ぐんび) (armaments)
Compare: 武具(ぶぐ) (arms and armor)
general
Added 2026.2.18 5:22 · Revised 2026.9.2 13:01
11500/11679_heiki