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1.
It comes from the root word "Laban" in Arabic. It is the name of a river in Heaven, made of milk and the Righteous drink from it.
A: What is your name?
B: Lubna
by Syeda Lubna January 23, 2008
 
2.
pussy booger
first used by Frosty Heidi and Frank
1) Dude, I took her panties off and she had a big nasty lubna
2) Don't be such a lubna
by dbj7 September 11, 2009
 
3.
A tree which yields an aromatic resin used in perfume and medicine

storax tree

snowbell
Lubna went to the moon
by stuff January 20, 2005
 
4.
Balcony Woman : a very sexy and hot super hero that goes through peoples windows when they call her unconsciously. she helps them get out of the closet and be comfortable.
Lubna came through my window to make me feel ok about myself.
Lubna by day balcony woman by night.
by LJ6964 March 17, 2011
 
5.
A word that first appeared on the Frosty Heidi and Frank Uncensored Show (frostyheidiandfrank.com) episode #51 (released on 9/11/2009). Officially defined by Frank as a 'pussy booger' but is flexible enough to refer to any mystery object in ones under garments; usually of the organic nature.
Example as performed by Heidi Hamilton.

Man: Honey hey you want to?
Woman: Wait I need to check to make sure I don't have any lubnas.
by Blackbolt September 11, 2009
 
6.
Strength, beauty, intelligence and humour. The ability to make a lame joke out of anything. Not to be viewed in the early morning just after wake up time.
Wow, I admire your Lubna!
by Ls446 July 01, 2014