A large tool resembling a carpenter's auger, typically having a helical blade and turned mechanically or by hand, and used for boring into or…

An instrument for boring. The tool employed for boring through rocks.

attributive and in other combinations, as boring-apparatus, boring-bench, boring-block, boring-machinery, boring-mill, boring-room, boring-tool; also…

An instrument for boring in soft ground, or for extracting rubbish from a bore-hole in mining.

(a) a person or organization that bores wells; (b) a machine or apparatus for boring wells.

a drill for boring into rock.

A boring tool used in sinking wells, consisting of a hollow iron cylinder having an opening in the side with a cutting lip, into which earth is…

an iron rod used for making bore-holes.

Mining. A person who or machine which drives a heading or horizontal tunnel. Cf. head, n.1 45, heading, n. 13. Now historical.

a drill designed for sinking wells; spec. a percussion drill.

An apparatus used in sinking an oil or gas well; spec. an oil rig.

all the surface equipment for constructing a new oil or gas well.

A boring instrument for sinking shafts. (Usually treated as French, trépan.)

(see quot.).

Mining. A machine used to drive horizontal tunnels. Cf. heading, n. 13.