diamond drill
noun
a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples.
Origin of diamond drill
1First recorded in 1820–30
Words Nearby diamond drill
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use diamond drill in a sentence
For commercial work, a diamond drill is often used, but this is scarcely necessary for the occasional work of a laboratory.
A Handbook of Laboratory Glass-Blowing | Bernard D. BolasThe dangerous reef in the estuary of the Tees is in course of removal by means of the diamond drill.
A diamond drill is a most useful adjunct to exploration of a mine or deposit.
The A B C of Mining | Charles A. BrambleThe diamond drill does better work in hard strata than it does in soft.
The A B C of Mining | Charles A. Bramble"It is a diamond drill, and strikes a bonanza on the lower level," said Carlin.
The Comstock Club | Charles Carroll Goodwin
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