Top Definition
An extremely beautiful girlfriend that is loving and caring and extremely fun to talk to. She is understanding and caring and usually has a boyfriend who loves her very much
You are such a Sira
by Derrick rose99999988 December 28, 2014
1 more definition
Smiling In Relative Amusement. For when you're not quite laughing out loud, but dont wish to "meh".
Henry: Unless this thing works sometime soon, it's going out of the window.

Will: That could get expensive.

Henry: SIRA.
by Plato's_Bitch April 14, 2009

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