a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples
Word origin
[1820–30]This word is first recorded in the period 1820–30. Other words that entered Englishat around the same time include: acetate, blouse, boomerang, insider, morphology
Examples of 'diamond drill' in a sentence
diamond drill
Everything changed with the diamond drill bit; the repair shop slowly wound down and the poet went off to college.