drill steel
— Noun
– English
~ carbon steel used for rock drills and dowels
Damask steel
— Noun
– English
~ a hard resilient steel often decorated and used for sword blades
Damascus steel
— Noun
– English
~ a hard resilient steel often decorated and used for sword blades
David Barnard Steinman
— Noun
– English
~ United States civil engineer noted for designing suspension bridges (including the George Washington Bridge) (1886-1960)