·noun An herb of the genus Pulmonaria (P. officinalis), of Europe;
— so called because the spotted appearance of the leaves resembles that of a diseased lung.
II. Lungwort ·noun Any plant of the genus Mertensia (·esp. M. Virginica and M. Sibirica) plants nearly related to Pulmonaria. The American lungwort is Mertensia Virginica, Virginia cowslip.