2
In poker (namely Hold 'em poker), when your hole cards are a Jack and a 5, especially when the cards are clubs and/or spades.
Johnny's got Jackson Five, and folds quickly.
by withheld234323 January 03, 2006
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3
A codeword for a joint of marijuana, intended for five people

OR

just a really big joint of marijuana.
We went to the pub with the gang the other day, rolled a jackson five and got sweety high...
by derS August 09, 2005
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