The Collaborative International Dictionary of English v.0.48:

Heath \Heath\ (h[=e]th), n. [OE. heth waste land, the plant
   heath, AS. h[=ae][eth]; akin to D. & G. heide, Icel.
   hei[eth]r waste land, Dan. hede, Sw. hed, Goth. hai[thorn]i
   field, L. bucetum a cow pasture; cf. W. coed a wood, Skr.
   ksh[=e]tra field. [root]20.]
   1. (Bot.)
      (a) A low shrub (Erica vulgaris or Calluna vulgaris),
          with minute evergreen leaves, and handsome clusters of
          pink flowers. It is used in Great Britain for brooms,
          thatch, beds for the poor, and for heating ovens. It
          is also called heather, and ling.
      (b) Also, any species of the genus Erica, of which
          several are European, and many more are South African,
          some of great beauty. See Illust. of Heather.
          [1913 Webster]

   2. A place overgrown with heath; any cheerless tract of
      country overgrown with shrubs or coarse herbage.
      [1913 Webster]

            Their stately growth, though bare,
            Stands on the blasted heath.          --Milton
      [1913 Webster]

   Heath cock (Zool.), the blackcock. See Heath grouse
      (below).

   Heath grass (Bot.), a kind of perennial grass, of the genus
      Triodia (Triodia decumbens), growing on dry heaths.

   Heath grouse, or Heath game (Zool.), a European grouse
      (Tetrao tetrix), which inhabits heaths; -- called also
      black game, black grouse, heath poult, heath fowl,
      moor fowl. The male is called heath cock, and
      blackcock; the female, heath hen, and gray hen.

   Heath hen. (Zool.) See Heath grouse (above).

   Heath pea (Bot.), a species of bitter vetch (Lathyrus
      macrorhizus), the tubers of which are eaten, and in
      Scotland are used to flavor whisky.

   Heath throstle (Zool.), a European thrush which frequents
      heaths; the ring ouzel.
      [1913 Webster]

WordNet (r) 3.0 (2006):

heath
    n 1: a low evergreen shrub of the family Ericaceae; has small
         bell-shaped pink or purple flowers
    2: a tract of level wasteland; uncultivated land with sandy soil
       and scrubby vegetation [syn: heath, heathland]

Moby Thesaurus II by Grady Ward, 1.0:

77 Moby Thesaurus words for "heath":
   Arabia Deserta, Death Valley, Sahara, alkali flat, alluvial plain,
   barren, barren land, barrens, basin, bottomland, brush, bush,
   bushveld, campo, champaign, champaign country, coastal plain,
   delta, desert, desolation, down, downs, dust bowl, fell, flat,
   flat country, flatland, flats, grass veld, grassland,
   howling wilderness, karroo, lande, level, llano, lowland, lowlands,
   lunar landscape, lunar mare, lunar waste, mare, mesa, mesilla,
   moor, moorland, open country, outback, pampa, pampas, peneplain,
   plain, plains, plateau, playa, prairie, salt flat, salt marsh,
   salt pan, savanna, sebkha, steppe, table, tableland, tree veld,
   tundra, upland, vega, veld, waste, wasteland, weald, weary waste,
   wide-open spaces, wild, wilderness, wilds, wold



Easton's 1897 Bible Dictionary:

Heath
   Heb. 'arar, (Jer. 17:6; 48:6), a species of juniper called by
   the Arabs by the same name ('arar), the Juniperus sabina or
   savin. "Its gloomy, stunted appearance, with its scale-like
   leaves pressed close to its gnarled stem, and cropped close by
   the wild goats, as it clings to the rocks about Petra, gives
   great force to the contrast suggested by the prophet, between
   him that trusteth in man, naked and destitute, and the man that
   trusteth in the Lord, flourishing as a tree planted by the
   waters" (Tristram, Natural History of the Bible).


U.S. Gazetteer Places (2000):

Heath, AL -- U.S. town in Alabama
   Population (2000):    249
   Housing Units (2000): 138
   Land area (2000):     0.910125 sq. miles (2.357213 sq. km)
   Water area (2000):    0.002215 sq. miles (0.005737 sq. km)
   Total area (2000):    0.912340 sq. miles (2.362950 sq. km)
   FIPS code:            33904
   Located within:       Alabama (AL), FIPS 01
   Location:             31.358154 N, 86.470193 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Heath, AL
    Heath


U.S. Gazetteer Places (2000):

Heath, OH -- U.S. city in Ohio
   Population (2000):    8527
   Housing Units (2000): 3593
   Land area (2000):     10.441593 sq. miles (27.043601 sq. km)
   Water area (2000):    0.006585 sq. miles (0.017054 sq. km)
   Total area (2000):    10.448178 sq. miles (27.060655 sq. km)
   FIPS code:            34748
   Located within:       Ohio (OH), FIPS 39
   Location:             40.032047 N, 82.435652 W
   ZIP Codes (1990):     43056
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Heath, OH
    Heath


U.S. Gazetteer Places (2000):

Heath, TX -- U.S. city in Texas
   Population (2000):    4149
   Housing Units (2000): 1462
   Land area (2000):     6.863948 sq. miles (17.777543 sq. km)
   Water area (2000):    0.043722 sq. miles (0.113239 sq. km)
   Total area (2000):    6.907670 sq. miles (17.890782 sq. km)
   FIPS code:            32984
   Located within:       Texas (TX), FIPS 48
   Location:             32.847890 N, 96.478273 W
   ZIP Codes (1990):     75087
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Heath, TX
    Heath