To sprinkle Kief on top of the weed in a Blunt/Joint and boost your high. Derived from the terms "Kief" (Sprinkled on top) and "Boost" (Stronger high) to form "Koost" and stylized into "Koostic Version" due to the common "Acoustic Version" (Guitar and vocals only) of songs.
Guy1: Yo we tryna make this uhlil koostic version?
Guy2: Yup wheres the grinder at?
Guy1: I got it right here nigga!
Guy2: Yup wheres the grinder at?
Guy1: I got it right here nigga!
by BfromC May 11, 2011
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