 "Shuggling" is an Irish word meaning to rattle, shake or jiggle something.With the aid of a short stick the huge boulder can be rocked or "shuggled" backwards and forwards.The stone is a lump of glacial granite and was first recorded in 1834 by Lt. Lancey during the first Ordnance Survey of Ireland; he noted then that it could be rocked back and forth with one finger.