Top Definition
1. A woman associated with a dynamic group of fun and fabulous collegians that is always the life of the party.

2. Girls just wanting to have fun

*Used by the Greek Organizations on University Campuses
1. That girl is so pretty, she must be a Sigmer!

2. We had such a good time last night, it must be because all those Sigmers were there.
by Frat Guy March 09, 2005

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