Source : Webster's Revised Unabridged Dictionary (1913)

Crust \Crust\, v. t. [imp. & p. p. {Crusted}; p. pr. & vb. n.
   {Crusting}.] [Cf. OF. crouster, L. crustare. See {Crust}, n.
   ]
   To cover with a crust; to cover or line with an incrustation;
   to incrust.

         The whole body is crusted over with ice. --Boyle.

         And now their legs, and breast, and bodies stood
         Crusted with bark.                       --Addison.

         Very foul and crusted bottles.           --Swift.

         Their minds are crusted over, like diamonds in the
         rock.                                    --Felton.

Crusted \Crust"ed\ (kr?st"?d), a.
   Incrusted; covered with, or containing, crust; as, old,
   crusted port wine.

Source : WordNet®

crusted
     adj : having a hardened crust as a covering [syn: {encrusted}, {crusty},
            {crustlike}]