sidhe
Sidhe (name) means a race of supernatural beings, the sidhe, that appear in Gaelic folklore and are similar to fairies or elves.
Etymology
This comes from obsolete Irish sidhe (now spelled sí), meaning "fairy mound" — a sense that appears in English only in the lowercase form sidhe. The sense meaning "fairies" or "a fairy", which appears in English both lowercase and capitalised, comes from a shortening of Irish aos sidhe (now spelled aos sí), "people of the fairy mound".