A skin disease. / The flakes of skin that fall off as a result of a skin disease. / Any crust-like formations on the skin, or in general. / (figuratively) The foul remains of anything adherent.

A grey bull trout (Salvelinus confluentus).

plural of scurf

(zoology) Any bryozoan which forms rounded or irregular patches of coral on stones, seaweeds, etc.

plural of sea scurf

Alternative form of breadroot scurfpea