borehole
UK[ˈbɔːhəʊl]US[ˈbɔːrhoʊl]
n
A deep, narrow hole made in the ground to find water, oil, or gas, or to study the structure of the rocks below.
Morpheme Breakdown
bore
hole
bore
to drill
hole
opening
Etymology
The word 'borehole' is a transparent compound formed from two native English elements. 'Bore' originates from the Old English verb borian, meaning to pierce, which is itself from a Proto-Germanic root conveying the sense of drilling. 'Hole' derives from the Old English noun hol, denoting a hollow or cavity, related to the concept of something being excavated. The compound logically combines the action ('bore') with its resulting object ('hole'), creating a precise technical term for a man-made, cylindrical excavation created by drilling equipment for resource extraction or geological investigation.
Analysis
Structure: bore (to drill) + hole (opening)
- bore: From Old English borian (to pierce, bore). A verb root indicating the action of drilling or making a hole.
- hole: From Old English hol (a hollow place, cave). A noun root indicating an opening or cavity.
Examples
The geologists drilled a borehole to analyze the soil composition.
Water from the new borehole will supply the entire village.
Data from the exploratory borehole confirmed the presence of natural gas.