Vug - noun.
Vug will save your butt when playing Scrabble, but what is it, exactly? Well, it's a small cavity filled with crystals. Sometimes spelled vugg or vugh, and comes from the Cornish word vooga, meaning "cave".
![](https://upload.wikimedia.org/wikipedia/commons/4/47/Vug_5614.JPG)
By
Walter Siegmund (talk) - Own work,
CC BY-SA 3.0,
Link