To block the cock of ones male friend.
To stop a male friend from recieving vaginal action.
Oh crap, that dude just Erwined me!!!
by Dave13579 December 12, 2007
exaggerated or exhilarating sense of female cunning and womanly wiles.
Did you see all those little girls being all erwin like?
by michael getz August 24, 2006
An erwin is a loser, someone who fails at life, someone who has horrible luck, or someone who is just really stupid.
jake: I went to go see a movie today, but when i got there it had just sold out!

Tony: You're such an erwin you should have shown up earlier.
by anton barbosa August 19, 2006
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