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1.
Light or an improved version of something.
Now that I have taken the doors off my celica, you could call it the toyota celica superleggera.

~or~

Person 1: What? No way, this is totally better than before.
Person 2: I know, its probably worth like twice the value.
Person 1: Thats superleggera.
by studdtrix December 24, 2011