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2 definitions found
 for Red spider
From The Collaborative International Dictionary of English v.0.48 :

  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.
     [1913 Webster]
  
           Your color, I warrant you, is as red as any rose.
                                                    --Shak.
     [1913 Webster]
  
     Note: Red is a general term, including many different shades
           or hues, as scarlet, crimson, vermilion, orange red,
           and the like.
           [1913 Webster]
  
     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.
           [1913 Webster]
  
     Red admiral (Zool.), 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 Atalanta butterfly, and
        nettle butterfly.
  
     Red ant. (Zool.)
     (a) A very small ant ({Myrmica molesta) which often infests
         houses.
     (b) A larger reddish ant ({Formica sanguinea), 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">Red ash (Bot.), an American tree ({Fraxinus pubescens),
        smaller than the white ash, and less valuable for timber.
        --Cray.
  
     Red bass. (Zool.) See Redfish
     (d) .
  
     Red+bay+(Bot.),+a+tree+({Persea+Caroliniensis">Red bay (Bot.), a tree ({Persea Caroliniensis) having the
        heartwood red, found in swamps in the Southern United
        States.
  
     Red beard (Zool.), a bright red sponge ({Microciona
        prolifera), common on oyster shells and stones. [Local,
        U.S.]
  
     Red+birch+(Bot.),+a+species+of+birch+({Betula+nigra">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. (Zool.)
     (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 ({Pyrrhocoris 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 horse. (Zool.)
     (a) Any large American red fresh-water sucker, especially
         Moxostoma macrolepidotum and allied species.
     (b) See the Note under Drumfish.
  
     Red lead.
     (Chem) See under Lead, and Minium.
  
     Red-lead ore. (Min.) Same as Crocoite.
  
     Red liquor (Dyeing), a solution consisting essentially of
        aluminium acetate, used as a mordant in the fixation of
        dyestuffs on vegetable fiber; -- so called because used
        originally for red dyestuffs. Called also red mordant.
        
  
     Red maggot (Zool.), the larva of the wheat midge.
  
     Red manganese. (Min.) Same as Rhodochrosite.
  
     Red man, one of the American Indians; -- so called from his
        color.
  
     Red+maple+(Bot.),+a+species+of+maple+({Acer+rubrum">Red maple (Bot.), a species of maple ({Acer rubrum). See
        Maple.
  
     Red mite. (Zool.) See Red spider, below.
  
     Red mulberry (Bot.), an American mulberry of a dark purple
        color ({Morus rubra).
  
     Red mullet (Zool.), the surmullet. See Mullet.
  
     Red ocher (Min.), a soft earthy variety of hematite, of a
        reddish color.
  
     Red perch (Zool.), the rosefish.
  
     Red phosphorus. (Chem.) See under Phosphorus.
  
     Red pine (Bot.), an American species of pine ({Pinus
        resinosa); -- so named from its reddish bark.
  
     Red precipitate. See under Precipitate.
  
     Red Republican (European Politics), originally, one who
        maintained extreme republican doctrines in France, --
        because a red liberty cap was the badge of the party; an
        extreme radical in social reform. [Cant]
  
     Red ribbon, the ribbon of the Order of the Bath in England.
        
  
     Red sanders. (Bot.) See Sanders.
  
     Red sandstone. (Geol.) See under Sandstone.
  
     Red+scale+(Zool.),+a+scale+insect+({Aspidiotus+aurantii">Red scale (Zool.), a scale insect ({Aspidiotus aurantii)
        very injurious to the orange tree in California and
        Australia.
  
     Red silver (Min.), an ore of silver, of a ruby-red or
        reddish black color. It includes proustite, or light red
        silver, and pyrargyrite, or dark red silver.
  
     Red+snapper+(Zool.),+a+large+fish+({Lutjanus+aya">Red snapper (Zool.), a large fish ({Lutjanus aya syn.
        Lutjanus Blackfordii) abundant in the Gulf of Mexico and
        about the Florida reefs.
  
     Red snow, snow colored by a mocroscopic unicellular alga
        ({Protococcus nivalis) which produces large patches of
        scarlet on the snows of arctic or mountainous regions.
  
     Red softening (Med.) a form of cerebral softening in which
        the affected parts are red, -- a condition due either to
        infarction or inflammation.
  
     Red spider (Zool.), a very small web-spinning mite
        ({Tetranychus telarius) which infests, and often
        destroys, plants of various kinds, especially those
        cultivated in houses and conservatories. It feeds mostly
        on the under side of the leaves, and causes them to turn
        yellow and die. The adult insects are usually pale red.
        Called also red mite.
  
     Red squirrel (Zool.), the chickaree.
  
     Red tape,
     (a) the tape used in public offices for tying up documents,
         etc. Hence,
     (b) official formality and delay; excessive bureaucratic
         paperwork.
  
     Red underwing (Zool.), any species of noctuid moths
        belonging to Catacola and allied genera. The numerous
        species are mostly large and handsomely colored. The under
        wings are commonly banded with bright red or orange.
  
     Red water, a disease in cattle, so called from an
        appearance like blood in the urine.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  red spider
      n 1: small web-spinning mite; a serious orchard pest [syn: red
           spider, red spider mite, Panonychus ulmi]

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