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1.
When someone has eyes only for apple products, even if the product is severely overrated or something of equal value and capability exists already.
John, "I need the new iPod touch. I must have it."

Sally, "Really? They removed the camera and video support? It doesn't even do that much..."

Doug, "Don't argue with him, Sally, he's got pretty bad iSight."

Sally, "Ah~"
by buckninety November 01, 2010
 
2.
used in the clique books,
another word for webcam.
"Ehmagawd Massie!!"
"What?"
"Turn on your iSight!"
-by me
by GraceyLu June 10, 2008
 
3.
The high vision required to view or watch things on an iphone.
Dude, my isight must be getting better. I had no trouble watching that movie on my iphone.
by flacker April 28, 2009