Top Definition
An ace is known in some states and countries like the U.K. and is known as a 3.5-4 grams of weed. It has been mistaken as a weed ciggarette, which this is false for a Weed cig is a joint.
Johnny: Dude lets smoke this Ace(weed)

Jimmy: Sure, with what
Johnny: an ACE
Jimmy: You mean a joint dumbass
by PotHead903 August 11, 2011

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