Top Definition
noun: a completely random, off topic, hyper child
adjective: weird, crazy
noun (proper): Look at Sigi humping that bush!

noun (common): Today I met a sigi, she was running down the street in underwear.

adjective: Only sigi kids make weird noises.
by sigi February 04, 2008
1 more definition
a pestige vechile of mitsubishi sigma, provides comfort and should b registered
fuck the sigi's mad, i want it back.... go againnnnne!!
by al n isaac January 25, 2006

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