Hypertext Webster Gateway: "Wellhole"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Wellhole \Well"hole`\, n.
1. (Arch.)
(a) The open space in a floor, to accommodate a staircase.
(b) The open space left beyond the ends of the steps of a
staircase.
2. A cavity which receives a counterbalancing weight in
certain mechanical contrivances, and is adapted also for
other purposes. --W. M. Buchanan.
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