Definitions
from The Century Dictionary.
- noun In boring wells, etc., the rod used to support the drill or boring-tool and to connect it with the motor at the surface.
Etymologies
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Examples
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This, but at another tunnel, was afterward modified by placing a separate hurdy-gurdy on a sleeve on each drill-rod; the advance movement of the drill being given by hydrostatic pressure on an annular piston, thus doing away with all gearing.
Scientific American Supplement, No. 455, September 20, 1884 Various
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