Crystalline or earthy matter forming the bulk of the material in a vein and containing metallic ore.
Origin
Late 18th century; earliest use found in John Sinclair (1754–1835), agricultural improver, politician, and codifier of ‘useful knowledge’. From vein + stuff.
Definition of veinstuff in US English:
veinstuff
nounˈveɪnstʌf
Crystalline or earthy matter forming the bulk of the material in a vein and containing metallic ore.
Origin
Late 18th century; earliest use found in John Sinclair (1754–1835), agricultural improver, politician, and codifier of ‘useful knowledge’. From vein + stuff.