SCURF

noun Etymology: Middle English, from Old English, of Scandinavian origin; akin to Icelandic skurfa ~; akin to Old High German scorf ~, Old English sceorfan to scarify Date: before 12th century thin dry scales detached from the epidermis especially in an abnormal skin condition, 2. something like flakes or scales adhering to a surface, the foul remains of something adherent, 3. a scaly deposit or covering on some plant parts, a plant disease characterized by ~, ~y adjective