look up any word, like full-donald:
 
1.
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
 
2.
Opposite of wordstull.
Wot! No mushrooms? Blean!
by Foul Ole Ron October 28, 2003
 
3.
Expression of disappointment or dismay
No bacon for me, I'm on a diet. Blean.
by Anonymous October 28, 2003