-Noun: A female who is interested in stereotypically nerdy, and usually male, subjects. These may include, but are not limited to, Star Wars, Star Trek, Stargate, D&D, Roleplaying, Comic books, Video games, SciFi Books/Moves, Programming, Hacking, Rennaisance Faires, Magic: The Gathering, LoTR, Action figures, Marching band, and editing Wikipedia.
Nerd: But you're a girl! You can't like Star Wars!
Girl: I'm a femmenerd, you idiot! I love all nerdy things!