[1] : The Collaborative International Dictionary of English v.0.48

gordian \gor"dian\, a.
   1. pertaining to gordius, king of phrygia, or to a knot tied
      by him; hence, intricate; complicated; inextricable.
      1913 webster

   gordian knot, an intricate knot tied by gordius in the
      thong which connected the pole of the chariot with the
      yoke. an oracle having declared that he who should untie
      it should be master of asia, alexander the great averted
      the ill omen of his inability to loosen it by cutting it
      with his sword. hence, a gordian knot is an inextricable
      difficulty; and to cut the gordian knot is to remove a
      difficulty by bold and energetic measures.
      1913 webster

   2. zool. pertaining to the gordiacea.
      1913 webster
see also:
gordian knot 

[2] : WordNet (r) 2.0

gordian knot
     n 1: any very difficult problem; insoluble in its own terms
     2: an intricate knot tied by gordius, the king of phrygia, and
        cut by the sword of alexander the great after he heard
        that whoever undid it would become ruler of asia

[3] : Moby Thesaurus II by Grady Ward, 1.0

37 moby thesaurus words for "gordian knot":
   chinese puzzle, rube goldberg contraption, can of worms, complex,
   crux, dilemma, enigma, jungle, knot, knotty point, labyrinth, maze,
   meander, mesh, mess, node, nodus, nonplus, oxymoron, paradox,
   perplex, perplexity, pons asinorum, poser, puzzle, quandary, ravel,
   snafu, snake pit, snarl, tangle, tangled skein, teaser,
   vexed question, webwork, wheels within wheels, wilderness

Gordian Knot >> G Words
Gordian Knot, definition of term: Gordian Knot
gordian+knot_pag1.html

Knot >> K Words
Knot, definition of term: Knot
knot_pag1.html

Gordian >> G Words
Gordian, definition of term: Gordian
gordian_pag1.html

Windsor Knot >> W Words
Windsor Knot, definition of term: Windsor Knot
windsor+knot_pag1.html

Fishermans Knot >> F Words
Fishermans Knot, definition of term: Fishermans Knot
fishermans+knot_pag1.html