Incrusto, incrustas, incrustâre. Varro. To parget, or to roughe cast: to make harde or in a crust.
Lewis and Short: Latin dictionary
in-crusto, āvi, ātum, 1, v. a., to cover with a coat or rind, to incrust (mostly anteand post-class.): ollam sapā et farre, Varr. R. R. 3, 14, 5: tota maceria levi lapide aut tectoria intrinsecus incrustetur, id. ib. 15, 1: sincerum vas, i. e.