The Collaborative International Dictionary
encrustment
encrustment \en*crust"ment\, n. That which is formed as a crust; incrustment; incrustation.
Disengaging truth from its encrustment of error.
--I.
Taylor.
Wiktionary
encrustment
n. That which is formed as a crust; encrustation.
Usage examples of "encrustment".
The imitation columns that flanked the doors had long since lost their flutings beneath an encrustment of brown paint and grease-bound dust.