1. A twilight nerd
2. A nerd and "some other word combined." (This is definition might have come from the 1st one, but the people who haven't read Twilight or New Moon or Eclipse do not understand.)
Person 1: Oh my Cullen, I just got an Edward and Bella t-shirt!!
Person 2: Really?! Gimme gimme gimme!!!
Person 3: You both are such twerds
Person 1 and 2: Grrrr!!!