encrust
/ɪnˈkrʌst/(亦作 incrust)
verb
with obj.
- cover or decorate (something) with a hard surface layer用硬的外层覆盖（或装饰）; 在…的表面形成硬壳：
the mussels encrust navigation buoys
航标上爬满了贻贝
as adj. encrusted the dried and encrusted blood.硬结的干血。
词源
early 17th cent. （in the sense 'cause to form a crust'）： from French incruster or encroûter, both from Latin incrustare, from in- 'into' + crusta 'a crust'.