Top Definition
1. a lightning-fast, vicious, dark-black, reptile-skined, fish-loving dragon which shoots orbs of lightning to set objects on fire (n.)
2. one of the main characters in Dreamwork's How to Train Your Dragon who is befriended by a boy named Hiccup (n.)
1. Last night, I saw a Nightfury fly over the stars. It was AMAZING!
2. Nightfury was so cute in Dreamwork's How to Train Your Dragon!
by Speady123 June 26, 2010

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