The Collaborative International Dictionary of English v.0.48:

Whitewood \White"wood`\, n.
   The soft and easily-worked wood of the tulip tree
   (Liriodendron tulipifera). It is much used in cabinetwork,
   carriage building, etc.
   [1913 Webster]

   Note: Several other kinds of light-colored wood are called
         whitewood in various countries, as the wood of
         Bignonia leucoxylon in the West Indies, of
         Pittosporum bicolor in Tasmania, etc.
         [1913 Webster]

   Whitewood bark. See the Note under Canella.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bass \Bass\, n. [A corruption of bast.]
   1. (Bot.) The linden or lime tree, sometimes wrongly called
      whitewood; also, its bark, which is used for making
      mats. See Bast.
      [1913 Webster]

   2. (Pron. ?) A hassock or thick mat.
      [1913 Webster]

WordNet (r) 3.0 (2006):

whitewood
    n 1: light easily worked wood of a tulip tree; used for
         furniture and veneer [syn: tulipwood, true tulipwood,
         whitewood, white poplar, yellow poplar]

U.S. Gazetteer Places (2000):

Whitewood, SD -- U.S. city in South Dakota
   Population (2000):    844
   Housing Units (2000): 356
   Land area (2000):     0.647444 sq. miles (1.676871 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.647444 sq. miles (1.676871 sq. km)
   FIPS code:            71580
   Located within:       South Dakota (SD), FIPS 46
   Location:             44.461314 N, 103.639136 W
   ZIP Codes (1990):     57793
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Whitewood, SD
    Whitewood