vein·stone 
(vānstōn′)
(vānstōn′)n.
Mineral matter in a vein exclusive of the ore; gangue.
- metacarpus
- metacenter
- metacentric
- metacentricity
- metachromatic
- metachromatism
- Metacom
- metadata
- metaethical
- metaethics
- metafiction
- metafictional
- metafictionist
- metagalaxy
- metagenesis
- metagenetic
- metagnathism
- metagnathous
- metal
- metalanguage
- metal detector
- metal halide lamp
- metalhead
- metalinguistic
- metalinguistically