kilnhole
/ˈkɪlnhoʊl/Definitions
1. noun
A small opening at the top of a kiln, used for loading fuel or materials.
“The craftsman inspected the kilnhole before firing the pottery.”
2. noun
A small opening or hole, especially in a wall or floor, that allows access to a kiln or furnace.
“The kilnhole in the brick wall led to a hidden kiln.”