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American Dictionary of the English Language

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Slate


SLATE, noun

1. An argillaceous stone which readily splits into plates; argillite; argillaceous shist.

2. A piece of smooth argillaceous stone, used for covering buildings.

3. A piece of smooth stone of the above species, used for writing on.

SLATE, verb intransitive To cover with slate or plates of stone; as, to slate a roof. [It does not signify to tile.]