Brochs, dry-stone circular towers, called also Picts' towers and Duns, with thick Cyclopean walls, a single doorway, and open to the sky, found on the edge of straths or lochs in the N. and W. of Scotland.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Brochant de Villiers * Brocken