1. To misspell the phrase, "See you!" when writing good-bye.

2. Used to describe a petite Asian girl of unnatural strength, on par with the fictional character "Chewbacca," from Star Wars.
1) "You idiot, it's spelt 'See you!' not 'Siyu!'"

2) Guy 1: "Wow. She just totally picked up that dude and put him in the trash can. She's such a Siyu."
by Harold Opacus December 07, 2007
1. To misspell the phrase, "See you!" when writing good-bye.

2. Used to describe a petite Asian girl of unnatural strength, on par with the fictional character "Chewbacca," from Star Wars.
1) "You idiot, it's spelt 'See you!' not 'Siyu!'"

2) Guy 1: "Wow. She just totally picked up that dude and put him in the trash can. She's such a Siyu."
by Harold Opacus November 30, 2007

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