The Collaborative International Dictionary of English v.0.48:

Glede \Glede\ (gl[=e]d), n. [AS. glida, akin to Icel. gle[eth]a,
   Sw. glada. Cf. Glide, v. i.] (Zool.)
   The common European kite (Milvus ictinus). This name is
   also sometimes applied to the buzzard. [Written also glead,
   gled, gleed, glade, and glide.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Glade \Glade\, n. [Prob. of Scand. origin, and akin to glad, a.;
   cf. also W. golead, goleuad, a lighting, illumination, fr.
   goleu light, clear, bright, goleu fwlch glade, lit., a light
   or clear defile.]
   [1913 Webster]
   1. An open passage through a wood; a grassy open or cleared
      space in a forest.
      [1913 Webster]

            There interspersed in lawns and opening glades.
                                                  --Pope.
      [1913 Webster]

   2. An everglade. [Local, U. S.]
      [1913 Webster]

   3. An opening in the ice of rivers or lakes, or a place left
      unfrozen; also, smooth ice. [Local, U. S.]
      [1913 Webster]

   Bottom glade. See under Bottom.

   Glade net, in England, a net used for catching woodcock and
      other birds in forest glades.
      [1913 Webster]

WordNet (r) 3.0 (2006):

glade
    n 1: a tract of land with few or no trees in the middle of a
         wooded area [syn: clearing, glade]

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "glade":
   Lebensraum, air space, back country, baygall, bog, bottom,
   bottomland, bottoms, buffalo wallow, clear space, clearance,
   clearing, desert, distant prospect, empty view, everglade, fen,
   fenland, hog wallow, holm, living space, marais, marish, marsh,
   marshland, meadow, mere, mire, moor, moorland, morass, moss, mud,
   mud flat, open country, open space, outback, peat bog, plain,
   prairie, quagmire, quicksand, salt marsh, slob land, slough, sough,
   steppe, sump, swale, swamp, swampland, taiga, terrain, territory,
   wallow, wash, wide-open spaces, wilderness



U.S. Gazetteer Places (2000):

Glade, KS -- U.S. city in Kansas
   Population (2000):    114
   Housing Units (2000): 51
   Land area (2000):     0.241000 sq. miles (0.624186 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.241000 sq. miles (0.624186 sq. km)
   FIPS code:            26325
   Located within:       Kansas (KS), FIPS 20
   Location:             39.682582 N, 99.310965 W
   ZIP Codes (1990):     67639
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Glade, KS
    Glade