puhekieltä Mythical dragon-like creature, having wings, only two legs and a barbed tail.
1940-54The Collected Poetry of Malcolm Lowry, "WE SIT UNHACKLED DRUNK AND MAD TO EDIT", UBC Press,1992, p.222:
Notions of freedom are tied up in drink / Our ideal life contains a tavern / Where man may sit and talk of or just think / All without fear of the nighted wyvern, / Or yet another tavern where it appears.