A mixture of the words 'Twilight' and 'Try-hard'. It is one of many names given to the fanbase of Stephenie Meyer's series of books, Twilight, New Moon and Eclipse (and Breaking Dawn, not yet released).
"Oh my god, I can't wait until the Twilight movie comes out in December!!!"
"You are such a Twihard."
"You are such a Twihard."
by Fanpire May 10, 2008