veinstone

or vein stone

[ veyn-stohn ]

noun

1. valueless rock or mineral matter occurring in a vein; gangue.

veinstone

/ ˈveɪnˌstəʊn /

noun

1. another word for gangue

Example Sentences

Very often displacement of the walls again takes place, and the infilling or “veinstone” is torn apart and brecciated.

From Project Gutenberg