a tool used for drilling or boring holes in rock, typically made of a hexagonal or octagonal steel rod with a sharp point; drill steel

A long steel tool, usually pointed at one end, used for drilling or boring holes in rock.

To drill or hammer a hole in rock or hard ground using a steel rod, typically for placing explosives in mining or tunneling work.

a drill or hammer drill used for boring through rock

A worker who performs brazing or soldering; brazing work.