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24.
Something or someone that is always interesting. For instance, when you lay in bed at night, you can stare at your wall and begin to notice all the little details that you wouldnt have notice otherwise. A wonderwall reflects your greatest thoughts and emotions.
Maybe you're gonna be the one that saves me... and afterall, you're my wonderwall
by Mark June 23, 2004
 
1.
A barrier which separates the mundane from the Transcendent Reality. A true Wonderwall will always have a crack, or a slit or an opening which allows anyone a glimpse of what lies beyond the Wonderwall.
I peeked through the opening of the Wonderwall and saw a dim glimmer of Krishna.
by Yajnavalkya dasa November 19, 2009
 
2.
A song every lovesick emo teenager believes they can relate to
Oh Ajay, you really are my wonderwall, and I will never get over you. Until the hot guy from the Cheesecake Factory asks me out.
by snlgirl July 31, 2005
 
3.
The mirror you rail lines of coke off of. Nothing romantic.
Yo, you got a wonderwall so we don't waste this blow?
by phantomwyse October 03, 2007
 
4.
a type of contraceptive device, more specifically a condom.
"Crap, Megan's Mom, do you have any wonderwalls in your desk? We don't want any BABIES"
by thisisnotkatie May 15, 2007
 
5.
Something (most typically a song) that has been so over used that it is boring and painful to hear. No matter how brilliant you thought it was when you first heard it after the millionth time today on the same radio show it is now annoying.

Named after the Oasis song of the same name which, despite being brilliant in many ways, has been rejected by many fans as "a bit wonderwall" due to over playing on air.
Person 1: "Have you heard that new Blur song?"

Person 2: "Only a million times already today... I did like it but now it's abit Wonderwall"
by Fridrihsbergs November 03, 2009
 
6.
The word wonderwall is a metaphorical term used to describe a person, place, or event.
It is also a compound word.

Wonder- To be filled with admiration, amazement, or awe.

A curiosity.

Wall- Any of various permanent upright constructions having a length much greater than the thickness and presenting a continuous surface except where pierced by doors, windows, etc.: used for shelter, protection, or privacy, or to subdivide interior space, to support floors, roofs, or the like, to retain earth, to fence in an area, etc.

So a wonderwall can be widely considered as a noun that is a strong foundation full of admiration.

In other words, it is something that gives you strength.

As it is a versatile expression, it may be used as an adj.
As cliched as this is, "you are my wonderwall."
or,
"I never realized before now, but that moment was my wonderwall."
by Alexx Broskii August 22, 2013
 
7.
your soulmate.
darwin, you're my wonderwall.
by brokendreamer June 12, 2012