slang for clean / sterile hypodermic syringes that have never been used. Term typically used by drug addicts who inject street drugs.
Never share dirty needles! Always use cleans!
by CFock December 13, 2008
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Adjective or Adverb

Describing something positively. In general, Clean = good, not bad, superb, fresh etc.

Also the word Clean must always be capitalized when used in this specific context.
Kountry: "Alright, so my parents are going to be out of town this weekend so we can throw that party."

Downtown: "Oh fuck yeah. That's a real Clean plan."
by Dackary Zopps March 25, 2009
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Has the same meaning as "cool" or "tight" or "bad ass". Use to describe anything positive.
That car is clean
That suit is clean
She's clean etc.
by ro91 November 22, 2005
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Damn, that movie was clean!
by Jason April 25, 2003
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Another word for cocaine, more typically of a higher purity with less cut.
Will: you good for a ball of that clean?
Mr. Clean: 110, come through
by HurricanesFan2001 April 9, 2010
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To be off drugs; improve or reinvent yourself.
Neil has been clean and sober for a year now.

Annabelle has decided to get clean.

Lucy's new years resolution is to get clean.
by black-widow1640 December 29, 2011
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