Top Definition
The cutest baby girl with beany eyes and happy smiles. She always a purple princess dress. Siyi is also half Chinese half Mexican
Awww, she is so adorable!

Yup, she is a siyi alright.
by guesswho012 February 04, 2012
1 more definition
Something Mexican people say when they are agreeing with something that makes them happy or excited.
"Hey Joe, let's get tacos"

Sí Yi!!!!!!
by Sirchevysilveradddo March 28, 2015

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