WIVERN
wyvern, wivern
(noun) 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
Source: WordNet® 3.1
Noun
wivern (plural wiverns)
Alternative spelling of wyvern
Source: Wiktionary
Wiv"er, Wiv"ern, n. Etym: [OE. wivere a serpent, OF. wivre, guivre,
F. givre, guivre, wiver, from L. vipera; probably influenced by OHG.
wipera, from the Latin. See Viper, and cf. Weever.]
1. (Her.)
Definition: A fabulous two-legged, winged creature, like a cockatrice, but
having the head of a dragon, and without spurs. [Written also
wyvern.]
The jargon of heraldry, its griffins, its mold warps, its wiverns,
and its dragons. Sir W. Scott.
2. (Zoöl.)
Definition: The weever.
Source: Webster’s Unabridged Dictionary 1913 Edition