encrust

 
Pronunciation: /ɪnˈkrʌst, ɛn-/
(also incrust)

verb

[with object]
  • cover or decorate (something) with a hard surface layer: the mussels encrust navigation buoys (as adjective encrusted) the dried and encrusted blood

Origin:

early 17th century (in the sense 'cause to form a crust'): from French incruster or encroûter, both from Latin incrustare, from in- 'into' + crusta 'a crust'