wellhole (English, noun)
expansion: wellhole (plural wellholes)
Senses:
glosses: The open space in a floor, to accommodate a staircase.
glosses: The open space left beyond the ends of the steps of a staircase.
glosses: A cavity which receives a counterbalancing weight in certain mechanical contrivances, and is adapted also for other purposes.
Forms:
form: wellholes
tags: plural