The Antique Dictionary
A definitive resource on terms related to European antiques including core terms as well as history and context
a dough box on a stand
Bread dough would be placed inside to rise and then taken out to be kneaded on the top.
These pieces sit upon a stand and typically have angled sides. While they may open either at the top or on the front, front openings are far more typical and would have made it much easier to move the kneaded dough from the top of the piece into the safety of the box to rise.