Source : Webster's Revised Unabridged Dictionary (1913)

Red \Red\ (r[e^]d), obs.
   . imp. & p. p. of {Read}. --Spenser.

Red \Red\, v. t.
   To put on order; to make tidy; also, to free from
   entanglement or embarrassement; -- generally with up; as, to
   red up a house. [Prov. Eng. & Scot.]

Red \Red\, a. [Compar. {Redder} (-d?r); superl. {Reddest}.] [OE.
   red, reed, AS. re['a]d, re['o]d; akin to OS. r[=o]d, OFries.
   r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw.
   r["o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r['a]uds, W.
   rhudd, Armor. ruz, Ir. & Gael. ruadh, L. ruber, rufus, Gr.
   'eryqro`s, Skr. rudhira, rohita; cf. L. rutilus. [root]113.
   Cf. {Erysipelas}, {Rouge}, {Rubric}, {Ruby}, {Ruddy},
   {Russet}, {Rust}.]
   Of the color of blood, or of a tint resembling that color; of
   the hue of that part of the rainbow, or of the solar
   spectrum, which is furthest from the violet part. ``Fresh
   flowers, white and reede.'' --Chaucer.

         Your color, I warrant you, is as red as any rose.
                                                  --Shak.

   Note: Red is a general term, including many different shades
         or hues, as scarlet, crimson, vermilion, orange red,
         and the like.

   Note: Red is often used in the formation of self-explaining
         compounds; as, red-breasted, red-cheeked, red-faced,
         red-haired, red-headed, red-skinned, red-tailed,
         red-topped, red-whiskered, red-coasted.

   {Red admiral} (Zo["o]l.), a beautiful butterfly ({Vanessa
      Atalanta}) common in both Europe and America. The front
      wings are crossed by a broad orange red band. The larva
      feeds on nettles. Called also {Atlanta butterfly}, and
      {nettle butterfly}.

   {Red ant}. (Zo["o]l.)
   (a) A very small ant ({Myrmica molesta}) which often infests
       houses.
   (b) A larger reddish ant ({Formica sanquinea}), native of
       Europe and America. It is one of the slave-making
       species.

   {Red antimony} (Min.), kermesite. See {Kermes mineral}
   (b), under {Kermes}.

   {Red ash} (Bot.), an American tree ({Fraxinus pubescens}),
      smaller than the white ash, and less valuable for timber.
      --Cray.

   {Red bass}. (Zo["o]l.) See {Redfish}
   (d) .

   {Red bay} (Bot.), a tree ({Persea Caroliniensis}) having the
      heartwood red, found in swamps in the Southern United
      States.

   {Red beard} (Zo["o]l.), a bright red sponge ({Microciona
      prolifera}), common on oyster shells and stones. [Local,
      U.S.]

   {Red birch} (Bot.), a species of birch ({Betula nigra})
      having reddish brown bark, and compact, light-colored
      wood. --Gray.

   {Red blindness}. (Med.) See {Daltonism}.

   {Red book}, a book containing the names of all the persons in
      the service of the state. [Eng.]

   {Red book of the Exchequer}, an ancient record in which are
      registered the names of all that held lands per baroniam
      in the time of Henry II. --Brande & C.

   {Red brass}, an alloy containing eight parts of copper and
      three of zinc.

   {Red bug}. (Zo["o]l.)
   (a) A very small mite which in Florida attacks man, and
       produces great irritation by its bites.
   (b) A red hemipterous insect of the genus {Pyrrhocoris},
       especially the European species ({P. apterus}), which is
       bright scarlet and lives in clusters on tree trunks.
   (c) See {Cotton stainder}, under {Cotton}.

   {Red cedar}. (Bot.) An evergreen North American tree
      ({Juniperus Virginiana}) having a fragrant red-colored
      heartwood.
   (b) A tree of India and Australia ({Cedrela Toona}) having
       fragrant reddish wood; -- called also {toon tree} in
       India.

Red \Red\ (r?d), n.
   1. The color of blood, or of that part of the spectrum
      farthest from violet, or a tint resembling these.
      ``Celestial rosy red, love's proper hue.'' --Milton.

   2. A red pigment.

   3. (European Politics) An abbreviation for Red Republican.
      See under Red, a. [Cant]

   4. pl. (Med.) The menses. --Dunglison.

Source : WordNet®

red
     adj 1: having any of numerous bright or strong colors reminiscent
            of the color of blood or cherries or tomatoes or
            rubies [syn: {reddish}, {ruddy}, {blood-red}, {carmine},
             {cerise}, {cherry}, {cherry-red}, {crimson}, {ruby},
            {ruby-red}, {scarlet}]
     2: characterized by violence or bloodshed; "writes of crimson
        deeds and barbaric days"- Andrea Parke; "fann'd by
        Conquest's crimson wing"- Thomas Gray; "convulsed with red
        rage"- Hudson Strode [syn: {crimson}, {violent}]
     3: (especially of the face) reddened or suffused with or as if
        with blood from emotion or exertion; "crimson with fury";
        "turned red from exertion"; "with puffy reddened eyes";
        "red-faced and violent"; "flushed (or crimson) with
        embarrassment" [syn: {crimson}, {reddened}, {red-faced}, {flushed}]
     4: red with or characterized by blood; "waving our red weapons
        o'er our heads"- Shakespeare; "The Red Badge of Courage";
        "the red rules of tooth and claw"- P.B.Sears
     [also: {redding}, {redded}, {reddest}, {redder}]

red
     n 1: the quality or state of the chromatic color resembling the
          hue of blood [syn: {redness}]
     2: a tributary of the Mississippi River that flows eastward
        from Texas along the southern boundary of Oklahoma and
        through Louisiana [syn: {Red River}]
     3: emotionally charged terms used to refer to extreme radicals
        or revolutionaries [syn: {Bolshevik}, {Marxist}, {pinko},
        {bolshie}]
     4: the amount by which the cost of a business exceeds its
        revenue; "the company operated at a loss last year"; "the
        company operated in the red last year" [syn: {loss}, {red
        ink}] [ant: {gain}]
     [also: {redding}, {redded}, {reddest}, {redder}]

Source : Free On-Line Dictionary of Computing

Red
     
        (Or "REDL") A language proposed by {Intermetrics} to meet the
        {Ironman} requirements which led to {Ada}.
     
        ["On the RED Language Submitted to the DoD", E.W. Dijkstra,
        SIGPLAN Notices 13(10):27 (Oct 1978)].
     
        ["RED Language Reference Manual", J. Nestor and M. van Deusen,
        Intermetrics 1979].
     
        (1995-01-19)