1 definition by Finz2008

Top Definition
G-5 refers to, and is short for, the Gulfstream 500, which is a private jet aircraft. (from Jesse McCartney song Leavin')
G-5 The Jesse McCartney song Leavin' says "Girl we flyin on a G-5, G-5"
by Finz2008 July 10, 2008

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