The Collaborative International Dictionary of English v.0.48:

Grayling \Gray"ling\, n. [From Gray, a.]
   1. (Zool.) A European fish (Thymallus vulgaris), allied to
      the trout, but having a very broad dorsal fin; -- called
      also umber. It inhabits cold mountain streams, and is
      valued as a game fish.
      [1913 Webster]

            And here and there a lusty trout,
            And here and there a grayling.        --Tennyson.
      [1913 Webster]

   2. (Zool.) An American fish of the genus Thymallus, having
      similar habits to the above; one species (T.
      Ontariensis), inhabits several streams in Michigan;
      another (T. montanus), is found in the Yellowstone
      region.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Umbrere \Um*brere\, Umbriere \Um*briere\, n. [F. ombre a shade,
   L. umbra; cf. F. ombrelle a sunshade, OF. also ombri[`e]re.
   See Umbrella.]
   In ancient armor, a visor, or projection like the peak of a
   cap, to which a face guard was sometimes attached. This was
   sometimes fixed, and sometimes moved freely upon the helmet
   and could be raised like the beaver. Called also umber, and
   umbril. [Obs.]
   [1913 Webster]

         But only vented up her umbriere.         --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Umber \Um"ber\, n. [F. ombre ocherous ore of iron, terre
   d'ombre, It. terra d'ombra, literally, earth of shadow or
   shade, L. umbra shadow, shade. Cf. Umber, 3 & 4,
   Umbrage.]
   1. (Paint.) A brown or reddish pigment used in both oil and
      water colors, obtained from certain natural clays
      variously colored by the oxides of iron and manganese. It
      is commonly heated or burned before being used, and is
      then called burnt umber; when not heated, it is called
      raw umber. See Burnt umber, below.
      [1913 Webster]

   2. An umbrere. [Obs.]
      [1913 Webster]

   3. [F. ombre, umbre, L. umbra.] (Zool.) See Grayling, 1.
      [1913 Webster]

   4. [Cf. NL. scopus umbretta, F. ombrette; probably fr. L.
      umbra shade, in allusion to its dark brown color. See
      Umber a pigment.] (Zool.) An African wading bird
      (Scopus umbretta) allied to the storks and herons. It is
      dull dusky brown, and has a large occipital crest. Called
      also umbrette, umbre, and umber bird.
      [1913 Webster]

   Burnt umber (Paint.), a pigment made by burning raw umber,
      which is changed by this process from an olive brown to a
      bright reddish brown.

   Cologne umber, or German umber, a brown pigment obtained
      from lignite. See Cologne earth.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Umber \Um"ber\, a.
   Of or pertaining to umber; resembling umber; olive-brown;
   dark brown; dark; dusky.
   [1913 Webster]

         Their harps are of the umber shade
         That hides the blush of waking day.      --J. R. Drake.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Umber \Um"ber\, v. t.
   To color with umber; to shade or darken; as, to umber over
   one's face. --B. Jonson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

colorful \colorful\ adj.
   1. having striking color. Opposite of colorless.

   Note: [Narrower terms: changeable, chatoyant, iridescent,
         shot; deep, rich; flaming; fluorescent, glowing;
         prismatic; psychedelic; red, ruddy, flushed,
         empurpled]

   Syn: colourful.
        [WordNet 1.5]

   2. striking in variety and interest. Opposite of colorless
      or dull. [Narrower terms: brave, fine, gay, glorious;
      flamboyant, resplendent, unrestrained; flashy, gaudy,
      jazzy, showy, snazzy, sporty; picturesque]
      [WordNet 1.5]

   3. having color or a certain color; not black, white or grey;
      as, colored crepe paper. Opposite of colorless and
      monochrome.

   Note: [Narrower terms: tinted; touched, tinged; amber,
         brownish-yellow, yellow-brown; amethyst; auburn,
         reddish-brown; aureate, gilded, gilt, gold, golden;
         azure, cerulean, sky-blue, bright blue; bicolor,
         bicolour, bicolored, bicoloured, bichrome; blue,
         bluish, light-blue, dark-blue; blushful,
         blush-colored, rosy; bottle-green; bronze, bronzy;
         brown, brownish, dark-brown; buff; canary,
         canary-yellow; caramel, caramel brown; carnation;
         chartreuse; chestnut; dun; earth-colored,
         earthlike; fuscous; green, greenish, light-green,
         dark-green; jade, jade-green; khaki; lavender,
         lilac; mauve; moss green, mosstone; motley,
         multicolor, culticolour, multicolored, multicoloured,
         painted, particolored, particoloured, piebald, pied,
         varicolored, varicoloured; mousy, mouse-colored;
         ocher, ochre; olive-brown; olive-drab; olive;
         orange, orangish; peacock-blue; pink, pinkish;
         purple, violet, purplish; red, blood-red, carmine,
         cerise, cherry, cherry-red, crimson, ruby, ruby-red,
         scarlet; red, reddish; rose, roseate; rose-red;
         rust, rusty, rust-colored; snuff, snuff-brown,
         snuff-color, snuff-colour, snuff-colored,
         snuff-coloured, mummy-brown, chukker-brown; sorrel,
         brownish-orange; stone, stone-gray; straw-color,
         straw-colored, straw-coloured; tan; tangerine;
         tawny; ultramarine; umber; vermilion,
         vermillion, cinibar, Chinese-red; yellow, yellowish;
         yellow-green; avocado; bay; beige; blae
         bluish-black or gray-blue); coral; creamy; cress
         green, cresson, watercress; hazel; honey,
         honey-colored; hued(postnominal); magenta;
         maroon; pea-green; russet; sage, sage-green;
         sea-green] [Also See: chromatic, colored, dark,
         light.]

   Syn: colored, coloured, in color(predicate).
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

umber
    adj 1: of the color of any of various natural brown earth
           pigments
    n 1: an earth pigment
    2: a medium brown to dark-brown color [syn: chocolate,
       coffee, deep brown, umber, burnt umber]

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "umber":
   beige, brown, brownish, brownish-yellow, brunet, chocolate,
   cinnamon, cocoa, cocoa-brown, coffee, coffee-brown, drab, dun,
   dun-brown, dun-drab, ecru, fawn, fawn-colored, fuscous, grege,
   hazel, khaki, lurid, nut-brown, olive-brown, olive-drab, seal,
   seal-brown, sepia, snuff-colored, sorrel, tan, taupe, tawny, toast,
   toast-brown, umber-colored, walnut, walnut-brown,
   yellowish-brown