
1) Fantasy creature 2) Irish folklore 3) Vengeance goddess
Found on
https://www.crosswordclues.com/clue/glaistig

The glaistig ɡ is a ghost from Scottish mythology, a type of fuath. It is also known as maighdean uaine (Green Maiden), and may appear as a woman of beautiful or monstrous mien, as a half-woman half-goat similar to a satyr, or in the shape of a goat. The lower goat half of her hybrid form is usually disguised by a long, flowing green robe or dres...
Found on
http://en.wikipedia.org/wiki/Glaistig
No exact match found.