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Rock drill   /rɑk drɪl/   Listen
Rock drill

noun
1.
A drill for penetrating rock.  Synonyms: bore bit, borer, stone drill.





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"Rock drill" Quotes from Famous Books



... DRILL.—Thomas Doane, Boston, Mass. I claim the arrangement of the round bars, E F G and H, of a rock drill carriage into a frame, for the reception of rock drilling machines which shall be able to reach therefrom any point where it is desirable to bore a hole, substantially as and for ...
— Scientific American, Vol. 17, No. 26 December 28, 1867 • Various


Words linked to "Rock drill" :   straight-fluted drill, straight flute, star drill, cross bit, drill


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