This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A form of pottery that has a stoneware body which is either white or colored, which is noted for its matte finish. It is a popular blue-and-white ware, but it comes in many other colors.

"They oohed and ahhed over the jasperware fireplace surround and anthemion moldings in the drawing room, the crystal chandelier in the large dining room, and the fine Chippendale dressing table in the master bedchamber."