wellhole


Also found in: Thesaurus, Medical, Legal, Encyclopedia.

wellhole

(ˈwɛlˌhəʊl)
n
(Architecture) an opening through a floor for light; a staircase or a chimneystack

well•hole

(ˈwɛlˌhoʊl)

n.
the shaft of a well.
[1670–80]
References in periodicals archive ?
A self-propelled drilling rig, built to operate within the confined area of the underground workings, drills large-bore wellholes upward through the limestone and horizontally into the oil sand bed, then completes each well by installing the special casing needed for steam input and bitumen collection.