a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples.
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. Bolas
The 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. Bramble
The 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