Veinstone \Vein"stone`\, n.
The nonmetalliferous mineral or rock material which
accompanies the ores in a vein, as quartz, calcite, barite,
fluor spar, etc.; -- called also {veinstuff}.
Veinstone \Vein"stone`\, n. (Mining)
Valueless material surrounding the ore in a lode; gangue;
matrix.