Definitions for "Diamond Drill"
A type of core drill using black diamonds set in an annular bit which is revolved by a shaft extending to the ground surface, where it connects with suitable driving machinery.
a piece of equipment used to drill through hard rock, the drill has a diamond on the drill bit and can cut through hard rock better than a metal drill bit
A drill using small diamond chips embedded on the head of the drill bit to cut the rock and the drill turns.