What is (a) A cove or series of coves, as the concaved surface under the overhang of a projecting upper story. (b) The splayed jambs of a flaring fireplace called?

coving — (a) A cove or series of coves, as the concaved surface under the overhang of a projecting upper story. (b) The splayed jambs of a flaring fireplace. (Webster's 1913.)

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