Definition of borehole
: a hole bored or drilled in the earth: as a : an exploratory well b chiefly British : a small-diameter well drilled especially to obtain water
First Known Use of borehole
BOREHOLE Defined for English Language Learners
Definition of borehole for English Language Learners
; especially : a hole dug into the earth in order to find water or oil
Seen and Heard
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