borehole
noun
- narrow shaft bored in the ground
Wiktionary
noun
Etymology: From bore + hole.
- A hole bored into the ground to collect samples for analysis or to extract oil or water.
“Near-synonym: well”
“The state of the groundwater is monitored at various boreholes in the area.”
- Any other hole that has been bored into something.
“There were little boreholes in the oak beam, indicating that insects had once taken some interest in it.”
verb
Etymology: From bore + hole.
- To bore a hole of this kind (in).