viper's bugloss noun1 •Any plant of species Echium vulgare, family Boraginaceae, native to most of Europe and western and central Asia, and widely introduced elsewhere.One of the old Leech Books gives the formula for a salve against the "elfin race and nocturnal goblin visitors." Fourteen herbs, including wormwood, viper's bugloss and fennel, were first gathered. — 1940