It means the same thing as whoa but is felt deeper and said slower.
You just won a hundred bucks!
Reply: whoa!
You just won a million bucks!
Reply: whooaa!
by bjhwords March 13, 2014
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a whore or slut

- it is commonly use by italians and was made popular by the hit shoe THE SOPRANOS
"She is a whooaa".

by guido-asour November 13, 2007
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