Also found in: Medical.
|n.||1.||A smearing or rubbing in or on; also, that which is smeared or rubbed on, as ointment or liniment.|
|2.||A thin crust of some extraneous substance formed on minerals.|
A thin crust or illinition of black manganese.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.