or Trows. A sort of fairy race, residing in hills and caverus. They are curious artificers in iron and precious metals. ( Zetland superstition.)
“I hung about thy neck that gifted chain, which all in our isles know was wrought by no earthly artist, but by the Drows in the secret recesses of their caverns.” —Scott: The Pirate, chap.x.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Drows from Fact Monster: