scurf
scurf \'sk*rf\ \'sk*r-fe-\ n [ME, of Scand origin; akin to Icel skurfa scurf; akin to OHG scorf]scurf, L carpere to pluck - more at HARVEST 1: thin dry scales detached from the epidermis esp. in an abnormal skin con dition 2a: something like flakes or scales adhering to a surface 2b: the foul remains of something adherent 3a: a scaly deposit or covering on some plant parts; also : a local ized or general darkening and roughening of a plant surface usu. more pronounced than russeting 3b: a plant disease characterized by scurf - scurfy aj
Webster's English Dictionary