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Webster 1913 Edition

Noun.

The art or act of varnishing in the Japanese manner.

ppr.

Varnishing in the manner of the Japanese; giving a glossy black surface.

Noun.

The art of varnishing and drawing figures on wood or other material, in the manner practiced by the Japanese.

japanning ‎(uncountable)

European technique of creating lacquerware in imitation of traditional Japanese style.