Mining a cavity or hollow in a rock or lode, often lined with crystals
Origin of vugCorn vooga, a cave
A small cavity in a rock or vein, often with a mineral lining of different composition from that of the surrounding rock.
Origin of vugCornish vooga.
- A small to medium-sized cavity inside rock that may be formed through a variety of processes.
From Cornish vooga (“cave”); compare fogou.