Scurff

n. 1. The bull trout.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
There stood a Hill not far whose griesly top Belch'd fire and rowling smoak; the rest entire Shon with a glossie scurff, undoubted sign That in his womb was hid metallic Ore, The work of Sulphur.