diamond drill

|

noun

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

Nearby words

  1. diammonium phosphate,
  2. diamond,
  3. diamond anniversary,
  4. diamond bar,
  5. diamond bird,
  6. diamond dust,
  7. diamond head,
  8. diamond in the rough,
  9. diamond jubilee,
  10. diamond lane

Origin of diamond drill

First recorded in 1820–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diamond drill