The Collaborative International Dictionary of English v.0.48:

Ashen \Ash"en\, a. [See Ash, the tree.]
   Of or pertaining to the ash tree. "Ashen poles." --Dryden.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ashen \Ash"en\, a.
   Consisting of, or resembling, ashes; of a color between brown
   and gray, or white and gray.
   [1913 Webster]

         The ashen hue of age.                    --Sir W.
                                                  Scott.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ashen \Ash"en\, n.,
   obs. pl. for Ashes. --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ashen
    adj 1: anemic looking from illness or emotion; "a face turned
           ashen"; "the invalid's blanched cheeks"; "tried to speak
           with bloodless lips"; "a face livid with shock";
           "lips...livid with the hue of death"- Mary W. Shelley;
           "lips white with terror"; "a face white with rage" [syn:
           ashen, blanched, bloodless, livid, white]
    2: made of wood of the ash tree

Moby Thesaurus II by Grady Ward, 1.0:

162 Moby Thesaurus words for "ashen":
   Quaker-colored, achromatic, achromic, acier, adust, aghast, anemic,
   appalled, ashy, astounded, awed, awestricken, awestruck, blanched,
   bleached, bled white, blistered, bloodless, burned, burnt,
   burnt-up, cadaverous, canescent, chloranemic, cinereous, cinerous,
   colorless, consumed, consumed by fire, corpselike, cowed, dapple,
   dapple-gray, dappled, dappled-gray, dead, deadly pale,
   deathly pale, decolorized, dim, dimmed, dingy, discolored, dismal,
   doughy, dove-colored, dove-gray, dreary, dull, dusty, etiolated,
   exsanguinated, exsanguine, exsanguineous, faded, faint, fallow,
   flat, frozen, ghastly, ghostly, glaucescent, glaucous, gray,
   gray with fear, gray-black, gray-brown, gray-colored, gray-drab,
   gray-green, gray-spotted, gray-toned, gray-white, grayed, grayish,
   griseous, grizzle, grizzled, grizzly, gutted, haggard, horrified,
   horror-struck, hueless, hypochromic, incinerated, intimidated,
   iron-gray, lackluster, lead-gray, leaden, livid, lurid, lusterless,
   macabre, mat, mealy, mouse-colored, mouse-gray, mousy, muddy,
   neutral, pale, pale as death, pale-faced, pallid, paralyzed,
   parched, pasty, pearl, pearl-gray, pearly, petrified, pyrographic,
   pyrolyzed, sad, sallow, scared stiff, scared to death, scorched,
   seared, sickly, silver, silver-gray, silvered, silvery, singed,
   slate-colored, slaty, smoke-gray, smoky, sober, somber, steel-gray,
   steely, stone-colored, stunned, stupefied, sunburned, tallow-faced,
   taupe, terrified, terror-crazed, terror-haunted, terror-ridden,
   terror-riven, terror-shaken, terror-smitten, terror-struck,
   terror-troubled, toneless, uncolored, undone, unmanned, unnerved,
   unstrung, wan, washed-out, waxen, weak, whey-faced, white