borehole

1. 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.

   сква́жинаskvážina, бурова́я сква́жинаburovája skvážina

   свердлови́наsverdlovýna

2. 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.

1. Daniel drilled a borehole in the backyard.

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