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1.
(n.) Money/credit in the form of an iTunes gift card.
Eric: Sweet! I got 25 iBucks for my birthday!
by DontLetsStart December 09, 2007
 
2.
Money/credit used on an iTunes account. Usually referring to the money on an iTunes gift card.
Eric: Sweet! I got 25 iBucks for my birthday.
by _Z February 24, 2008