1) A girl/woman who doesn't like being on the bottom, typically because they
don't enjoy being "dominated". I'm also told the bottom hurts more; that might be another reason (although I wouldn't know).
2) A woman who does not want to be submissive to men. It comes from the old
Hebrew story of Lilith, who was Adam's first
wife. She was forbidden to live in the Garden of
Eden because she refused to be secondary to Adam. The term 'Lilith' generally has a very negative connotation, and is often associated with feminism.
"Hey bro, are you
still dating *insert girl's name here*? "
"
Nah, I had to break it off. She was a total Lilith; I just couldn't take it anymore. "