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1.
Nickname for the city of Boston when completely blanketed with snow.
As we went on the highway, we caught a glimpse of Froston in the distance.
by LeTomTornados June 29, 2012
 
2.
A professional gamer that plays many games name originated from a skate video "Chomp on This" from the skateboarder "Eric Koston", where he chugs a whole can of beer and almost instant puking on it.
Ah man your so Froston
by Dizzyy December 04, 2007