coost. simply a girl who prefers to hang out and/or go out with older guys, rather then guys her own age.
man that girl is coost
by mr bruce-martin September 6, 2006
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leave an area/vacinity/place/location/position ASAP. Similar to boost and to coast but not near the sea.
lets fucken coost to the market broski
by bigdawgshit88 September 5, 2017
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