The first of the Dragons of Morgoth, called the Father of Dragons; in the Dagor Bragollach, the Nirnaeth Arnoediad, and the Sack of Nargothrond; cast his spell upon Túrin and upon Nienor; slain by Túrin at Cabed-en-Aras. Called also the Great Worm and the Worm of Morgoth. 137, 177, 181-2, 184, 235-6, 261-5, 268, 271-9, 283-4, 296, 300