The Collaborative International Dictionary of English v.0.48:

Palisade \Pal`i*sade"\, n. [F. palissade, cf. Sp. palizada, It.
   palizzata, palizzo, LL. palissata; all fr. L. palus a stake,
   pale. See Pale a stake.]
   1. (Fort.) A strong, long stake, one end of which is set
      firmly in the ground, and the other is sharpened; also, a
      fence formed of such stakes set in the ground as a means
      of defense.
      [1913 Webster]

   2. Any fence made of pales or sharp stakes.
      [1913 Webster]

   3. A line of bold cliffs, esp. one showing basaltic columns;
      -- usually in pl., and orig. used as the name of the
      cliffs on the west bank of the lower Hudson.
      [Webster 1913 Suppl.]

   Palisade cells (Bot.), vertically elongated parenchyma
      cells, such as are seen beneath the epidermis of the upper
      surface of many leaves.

   Palisade worm (Zool.), a nematoid worm (Strongylus
      armatus), parasitic in the blood vessels of the horse, in
      which it produces aneurisms, often fatal.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Palisade \Pal`i*sade"\, v. t. [imp. & p. p. Palisaded; p. pr.
   & vb. n. Palisading.] [Cf. F. palissader.]
   To surround, inclose, or fortify, with palisades.
   [1913 Webster]

WordNet (r) 3.0 (2006):

palisade
    n 1: fortification consisting of a strong fence made of stakes
         driven into the ground
    v 1: surround with a wall in order to fortify [syn: wall,
         palisade, fence, fence in, surround]

Moby Thesaurus II by Grady Ward, 1.0:

93 Moby Thesaurus words for "palisade":
   abatis, advanced work, arm, armor, armor-plate, balistraria, bank,
   banquette, bar, barbed-wire entanglement, barbican, barricade,
   barrier, bartizan, bastion, battle, battlement, blockade, bluff,
   breastwork, bulkhead in, bulwark, casemate, castellate,
   cheval-de-frise, circumvallation, cliff, contravallation,
   counterscarp, crag, crenellate, curtain, demibastion, dig in, dike,
   drawbridge, earthwork, embattle, enclosure, entanglement, entrench,
   escarp, escarpment, face, fence, fieldwork, fortalice,
   fortification, fortify, garrison, glacis, hedge, hem, leg,
   loophole, lunette, machicolation, man, man the garrison, mantelet,
   merlon, mine, mound, outwork, pale, palisades, parados, parapet,
   peg, picket, pile, portcullis, postern gate, precipice, rail,
   rampart, ravelin, redan, redoubt, sally port, scar, scarp, sconce,
   shank, spile, stake, steep, stockade, tenaille, vallation, vallum,
   wall, work



U.S. Gazetteer Places (2000):

Palisade, NE -- U.S. village in Nebraska
   Population (2000):    386
   Housing Units (2000): 188
   Land area (2000):     0.356859 sq. miles (0.924260 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.356859 sq. miles (0.924260 sq. km)
   FIPS code:            38130
   Located within:       Nebraska (NE), FIPS 31
   Location:             40.348408 N, 101.107126 W
   ZIP Codes (1990):     69040
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Palisade, NE
    Palisade


U.S. Gazetteer Places (2000):

Palisade, CO -- U.S. town in Colorado
   Population (2000):    2579
   Housing Units (2000): 1117
   Land area (2000):     1.074809 sq. miles (2.783743 sq. km)
   Water area (2000):    0.010805 sq. miles (0.027986 sq. km)
   Total area (2000):    1.085614 sq. miles (2.811729 sq. km)
   FIPS code:            56970
   Located within:       Colorado (CO), FIPS 08
   Location:             39.109335 N, 108.354277 W
   ZIP Codes (1990):     81526
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Palisade, CO
    Palisade


U.S. Gazetteer Places (2000):

Palisade, MN -- U.S. city in Minnesota
   Population (2000):    118
   Housing Units (2000): 67
   Land area (2000):     0.454019 sq. miles (1.175903 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.454019 sq. miles (1.175903 sq. km)
   FIPS code:            49498
   Located within:       Minnesota (MN), FIPS 27
   Location:             46.712784 N, 93.489425 W
   ZIP Codes (1990):     56469
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Palisade, MN
    Palisade