Wikipedia
A bakestone is an early griddle: a portable flat stone placed on or next to a fire to cook cakes of various kinds. It was usually oval and of slate or very fine micaceous flaggy sandstone ca. thick. Although stone became replaced with cast iron plate in the 19th century its name remained unchanged.
In Wales, a bakestone, 'maen' in Welsh; 'gradell' in the north of the country, and 'planc', is the name for the cast iron or steel griddle used for cooking Welsh cakes, especially in South Wales.
In Lancashire and the West Riding of Yorkshire it was spelled and pronounced bakstone and used primarily to cook very thin yeasted oatcakes or earlier Riddlebread.
Usage examples of "bakestone".
In one corner two slaves were frantically rolling out rounds of bread and slapping them onto a crackling-hot bakestone.