borehole
nounUK /ˈbɔː.həʊl/
US /ˈbɔːr.hoʊl/
A deep, narrow hole made in the ground to find water or oil.
The workers dug a borehole to reach the water underground.
SYNONYMS
RELATED WORDS
OTHER MEANINGS
2. A hole made by a drill in any material, such as rock or wood.
The scientist examined the borehole in the rock sample.
3. A small tunnel made by an animal that bores into wood or soil.
The beetle left a tiny borehole in the tree trunk.
4. An opening drilled to study the layers of the earth.
Geologists used the borehole to learn about the soil deep below.