Slang term for a gun, particularly a handgun or pistol.
Modern slang, likely derived from the sound a gun makes ('blick') or possibly from 'click' with a 'bl' prefix, popularized in hip-hop culture since the early 2000s.
Slang words for weapons often come from the sounds they make—'blickey' is a perfect example of how modern street language creates new words through onomatopoeia and cultural meaning-making.
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