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wy·vernalso wi·vern (wī′vərn)
A two-legged dragon having wings and a barbed tail.
[Alteration of Middle English wyvere, viper, from Old North French wivre, from Latin vīpera; see viper.]
wyvern(ˈwaɪvən) or less commonly
(Heraldry) a heraldic beast having a serpent's tail and a dragon's head and a body with wings and two legs
[C17: variant of earlier wyver, from Old French, from Latin vīpera viper]
a mythical creature often depicted heraldically as a two-legged winged dragon with a barbed tail.
[1600–10; alter. (with unexplained -n) of earlier wyver, Middle English < Anglo-French wivre (Old French guivre) < Latin vīpera viper]
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|Noun||1.||wyvern - a fire-breathing dragon used in medieval heraldry; had the head of a dragon and the tail of a snake and a body with wings and two legs|