"Winnersh" is a town near Reading in the U.K., but is also an alternative to the word "good" and works in any context where "good" could appear.
"You will shortly be arriving at Winnersh Station"

"Huh, it's a pretty winnersh day"

"Did you see that old guy fall off his bike?"
"Yeah, that was pretty winnersh."
by Shebrew February 22, 2006
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refers to something that is considered very good, or "for the win". If something is IN the winnersh triangle, it is even better and considered to be the height of brilliance.
I have just shagged the most amazing girl ever, she was fantastic and it was right slap-bang in the middle of the Winnersh Triangle!

by danielson629 May 7, 2007
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