Translation guide
A flashbang is a non-lethal explosive device that produces a blinding flash of light and a loud noise to disorient people. This entry covers how to refer to the device itself and related concepts in Japanese.
Referring to the actual flashbang grenade used by military or police.
Standard term for 'flashbang' or 'stun grenade'. Literally 'flash bullet/shell'. Used in news and technical contexts.
The police used a flashbang to break in.
Loanword from English 'stun grenade'. Common in games and military contexts.
Throw a stun grenade!
Direct loanword from English 'flashbang'. Used mainly in gaming or subculture contexts.
Stun the enemy with a flashbang.
Describing the disorienting effect of a flashbang, not the device itself.
Expressing the action of deploying a flashbang.
In English, 'flashbang' and 'stun grenade' are often used interchangeably. In Japanese, 閃光弾 (flash shell) is the standard term. スタングレネード is understood but less formal. フラッシュバン is gaming slang.