schlich

Webster's Dictionary (1913)

Origin: G.; akin to LG. slick mud, D. slijk, MHG. slīch.

Metallurgy The finer portion of a crushed ore, as of gold, lead, or tin, separated by the water in certain wet processes. [Written also slich, slick.]

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54