[Agent-noun of Latin type from calefacĕre to warm.]

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  † 1.  He who, or that which warms; a warmer.

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1605.  Timme, Quersit., II. vii. 133. It standeth in neede of a calefactor and restorer of heate.

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  2.  Name of a small kind of stove.

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1831.  Fraser’s Mag., III. 140. On the one hand … smokes (in patent calefactors) a Dinner of innumerable courses.

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