Di·vin·ing a. That divines; for divining.
  Divining rod, a rod, commonly of witch hazel, with forked branches, used by those who claim to be able to discover water or metals under ground by sensing them through such a rod.
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  divining rod
       n : forked stick that is said to dip down to indicate
           underground water or oil [syn: dowser, dowsing rod, waterfinder,
            water finder]