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a combination of "black" and "jeans", not acceptable attire in reasonable crowds; may be acid-washed or otherwise-washed in a non-appealing way
I wanted to wear my favorite jorts two days in a row, but the coin-op laundry was out of order, so I had to put on my best bleans.
by Another Amy January 07, 2010
Opposite of wordstull.
Wot! No mushrooms? Blean!
by Foul Ole Ron October 28, 2003
Expression of disappointment or dismay
No bacon for me, I'm on a diet. Blean.
by Anonymous October 28, 2003