WELLHOLE
- The open space in a floor, to accommodate a staircase.
- The open space left beyond the ends of the steps of a staircase.
- A cavity which receives a counterbalancing weight in certain mechanical contrivances, and is adapted also for other purposes.
- The open space left beyond the ends of the steps of a staircase.
- A cavity which receives a counterbalancing weight in certain mechanical contrivances, and is adapted also for other purposes.