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It means skinny or thin male.

Utilized in a good sence not in a mocking way, but as a nickname to a friend, relative, or boyfriend.
Mom- Where my handsome "flaco"?
by FritosConQueso August 12, 2016
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3
noun. someone who is TOO skinny from drugs; a clucker, crackhead, or one who bangs tar. usually derogatory. even if they're not using
dude better eat, you look like a flaco
by jiz May 16, 2005
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4
A much much much kewliezer blue bird guy in smash bros who's like the best and killxorz people with his laser and is like "Flaco here, I'm fine" in Lylat Wars and he is SO DAMN KEWL!
OMG pwnage to teh MAXorZ!!! Hidden spike the Flaco to teh MAXORZ!!!
by Alex McIver January 27, 2004
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5
One who is to close to retirement to tell tesoro to "fuck off!".
Flaco is'nt going to give tesoro the chance to make him a shithead!(see"shithead")
by Coastworm October 17, 2003
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6
A term used against obese land whales as to cause offense by way of FLACO meaning skinny in the dictionary
Oh my god. Look at that flaco boy over there
by ROLLINaJ December 17, 2018
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