(definition) by Webster 1913 Wed Dec 22 1999 at 4:19:22

Wad, Wadd, n. Min.

(a)

An earthy oxide of manganese, or mixture of different oxides and water, with some oxide of iron, and often silica, alumina, lime, or baryta; black ocher. There are several varieties.

(b)

Plumbago, or black lead.

© Webster 1913.

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