SWOSH is a combined word, meaning having swag, but also being posh! Invented by Andy Fowler (overload band member) who has also invented "Bandankles"
"Blair, you're looking pretty swosh today!"
by OverloadFC August 18, 2014
1 more definition
The next swag. It will last for a while and all the faggots who said swag every ten minutes will say swosh and every other faggot in the class will think they are cool and it will spread.
Your move in the basketball game was so swosh!
by Chris325 February 27, 2014