pizza stone
n.— «Baking stone: A stone creates a more even temperature and the crunchy-chewy crust that bakers seek. Also known as a pizza stone, this large porous tile can be left in the bottom of the oven at all times to even the heat.» —“Vicki Larson” Marin Independent Journal (California) Jan. 13, 2009. (source: Double-Tongued Dictionary)
Further reading
When Kentrell from West Memphis, Arkansas, worked for a granite company, his co-workers who were about to put two pieces of granite together would say I’m going to pull a seam. But why would they use the word pull for the action of pushing...
A young listener wonders: Why do the words icing and frosting both refer to the idea of being cold? The names for this sweet cover on a cake refer to its appearance, not its temperature. Something similar occurs with the glaze in glazed doughnut...