Whats a sorority?
This is a social organization for under graduate students. In order to be a part on one in your respective institution you have to be initiated and an under graduate. For further details, check out http://en.wikipedia.org/wiki/Fraternities_and_sororities.
a college clique.like delta sigma (its all the greek letters in college) :P
In latin, the word 'sorror' means sister, so it should mean something like sisterhood.
An all-female fraternity.