A misspelling of the word "bosom". Common in the Midwest USA, this modern misspelling is generally only used by illiterate oafs or the occasional inbred moron.
(She) turns to me with heaving bussom aglow.
af DrowsyKitten 17. november 2013
Breasts; boobs. The upper portion of a female which men like to stare at.
Did you see the bussoms on that girl?
af ILikeToScreamAtStrangers 7. maj 2010