The Collaborative International Dictionary of English v.0.48:

Driftwood \Drift"wood`\, n.
   1. Wood drifted or floated by water.
      [1913 Webster]

   2. Fig.: Whatever is drifting or floating as on water.
      [1913 Webster]

            The current of humanity, with its heavy proportion
            of very useless driftwood.            -- New Your
                                                  Times.
      [1913 Webster]

WordNet (r) 3.0 (2006):

driftwood
    n 1: wood that is floating or that has been washed ashore

U.S. Gazetteer Places (2000):

Driftwood, PA -- U.S. borough in Pennsylvania
   Population (2000):    103
   Housing Units (2000): 88
   Land area (2000):     1.791692 sq. miles (4.640462 sq. km)
   Water area (2000):    0.092487 sq. miles (0.239539 sq. km)
   Total area (2000):    1.884179 sq. miles (4.880001 sq. km)
   FIPS code:            19976
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             41.338836 N, 78.135535 W
   ZIP Codes (1990):     15832
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Driftwood, PA
    Driftwood