The Collaborative International Dictionary of English v.0.48:

Japanned \Ja*panned"\, a.
   Treated, or coated, with varnish in the Japanese manner.
   [1913 Webster]

   Japanned leather,leather treated with coatings of Japan
      varnish, and dried in a stove. --Knight.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Japan \Ja*pan"\ (j[.a]*p[a^]n"), v. t. [imp. & p. p. Japanned
   (j[.a]*p[a^]nd"); p. pr. & vb. n. Japanning.]
   [1913 Webster]
   1. To cover with a coat of hard, brilliant varnish, in the
      manner of the Japanese; to lacquer.
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   2. To give a glossy black to, as shoes. [R.] --Gay.
      [1913 Webster]