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ROCK DRILL
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A drill for penetrating rock
Synonyms:
bore bit; borer; rock drill; stone drill
Classified under:
Nouns denoting man-made objects
Hypernyms ("rock drill" is a kind of...):
drill (a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows))
Hyponyms (each of the following is a kind of "rock drill"):
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-fluted drill; straight flute (a rock drill with flutes that are straight)
