stone drill

/stoʊn drɪl/
IPA guide

Other forms: stone drills

Definitions of stone drill
  1. noun
    a drill for penetrating rock
    synonyms: bore bit, borer, rock drill
    see moresee less
    types:
    cross bit
    a rock drill having cruciform cutting edges; used in mining
    star drill
    a steel rock drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows
    straight flute, straight-fluted drill
    a rock drill with flutes that are straight
    type of:
    drill
    a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)
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