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A woman's glutes or ass.

*ORIGIN* The Word Glutavion is composed of the word Glutes (muscles located at the higher reer of the booty) and Avion originally meaning air born or anything flying, now a slang term attached to any word to enhance the initial word giving the word infront of avion a higher meaning hence Glutavion , a booty out of this world!
Example 1
Guy 1- Yo broo you see shawty over there?!
Guy2- Hell yea bro , I finna hit her glutavion

Example 2
Guy 1 - Yo she gave you head yet?
Guy2- Na but i hit her glutavion
by @Theofficialmicdee February 17, 2018
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