Bible Dictionaries
Wellhole

Webster's Dictionary

(1):

(n.) The open space left beyond the ends of the steps of a staircase.

(2):

(n.) A cavity which receives a counterbalancing weight in certain mechanical contrivances, and is adapted also for other purposes.

(3):

(n.) The open space in a floor, to accommodate a staircase.

Bibliography Information
Webster, Noah. Entry for 'Wellhole'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​w/wellhole.html. 1828.