any of several Eurasian plants of the boraginaceous genus Pulmonaria, esp P. officinalis, which has spotted leaves and clusters of blue or purple flowers: formerly used to treat lung diseases
2.
any of various boraginaceous plants of the N temperate genus Mertensia, such as Mertensia maritima (sea lungwort), having drooping clusters of tubular usually blue flowers
lungwort in American English
(ˈlʌŋˌwɜrt)
noun
any of various plants formerly used in treating lung diseases; esp., any of a genus(Pulmonaria) of European plants of the borage family, with large, spotted leaves and clusters of blue or purple flowers
Word origin
ME longwort < OE lungenwyrt (see lung & wort2): from a fancied resemblance to human lungs