It's police slang for a handgun.

I knew a cop who worked undercover and was confronted by uniformed officers who didn't know him. Weapons were drawn.
These cops pulled their chunks and then had me on the ground.
by Dan Zakreski November 29, 2004
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Daniel: "Hey what do you call a fat chink?"
Nikko: "What?"
Daniel: "A Chunk"
by Daniel Os February 23, 2007
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White man- "what do you call a fat chink?"
White man2- "i dunno. what?"
White man- "A CHUNK!"
by Nick Veitch January 30, 2009
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Australian term for getting a Chinese meal with a group of close friends.
Would you like to come for a chunk with Sam and I on Sunday?
by Chinese Sundays November 17, 2013
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later, goodbye. derived from peace, or peace out, as in throwing two fingers up when leaving.

see also: chunk the deuce, deuce, and chunk deuce
I'm out, chunk.
by basebasebase January 17, 2004
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I needa get me $50 so I can get a goddamn bag of chunk!
by ChunkDaddy July 2, 2010
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