Wyvern folklore is rarely fire-breathing like the four-legged dragon. Sometimes modern fantasy book and media authors have wyverns that are frost-breathing or poison-breathing instead of fire-breathing. The current spelling "wyvern" is not attested before the seventeenth century as "winged two-footed dragon". According to the Oxford English Dictionary, it is an alteration of Middle English "wyver" (attested thirteenth century), from Anglo-French "wivre" (cf. French "guivre" and "vouivre"), which originate from Latin "vīpera", meaning "viper", "adder", or "asp". Conversely, medievalist William Sayers proposes a more complex origin for the term. He notes that the Anglo-French "guivre" and its Middle English derivative ceased to
Roundel (heraldry) Roundel (heraldry) A roundel is a circular charge in heraldry. Roundels are among the oldest charges used in coats of arms, dating from the start of the age of heraldry in Europe, "circa" 1200–1215. Roundels are typically a solid colour but may be charged with an item or be any of the furs used in heraldry. Roundels are similar to the annulet, which some heralds would refer to as a "false roundel". In some languages, the heraldic roundel has a unique name specific to its tincture, based on the Old French tradition. This is still observed in English-language heraldry, which