Top Definition
a stunning girl who usually knows everything about everything. might be a bit mad but in a good way.
i'm dating a girl called Sini.
by Baz March 25, 2003
an asiatic person...usually a major babe
wow look at that tight sini
by Arnold April 12, 2004
eon's bitch
Sini from Synthetic Execution.
by siniSUCKS March 01, 2004

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