bore bit

Noun
  1. A drill for penetrating rock (synset 102878678)
    is a 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)
    subtypes:
    • 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
    same as: borer, rock drill, stone drill

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