From Longman Dictionary of Contemporary Englishstun gunˈstun gun noun [countable] PMWa weapon that produces a very strong electric current and can be used to make animals or people unconscious
Examples from the Corpus
stun gun• He also packs a stun gun that could be used to send an electric current into any bite.• His field kits have been known to contain chemical mace and an electric stun gun.• Laming claimed he knew nothing about the drugs ring and said Black put up £10,000 towards development of the stun gun.• Police say against the wrong victim, the stun gun could be deadly.• The stun gun was applied to parts of her naked body and activated, the jury was told. 