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

  Spider \Spi"der\, n.[OE. spi[thorn]re, fr. AS. spinnan to spin;
     -- so named from spinning its web; cf. D. spin a spider, G.
     spinne, Sw. spindel. See Spin.]
     1. (Zool.) Any one of numerous species of arachnids
        comprising the order Araneina. Spiders have the mandibles
        converted into poison fangs, or falcers. The abdomen is
        large and not segmented, with two or three pairs of
        spinnerets near the end, by means of which they spin
        threads of silk to form cocoons, or nests, to protect
        their eggs and young. Many species spin also complex webs
        to entrap the insects upon which they prey. The eyes are
        usually eight in number (rarely six), and are situated on
        the back of the cephalothorax. See Illust. under
        Araneina.
        [1913 Webster]
  
     Note: Spiders are divided into two principal groups: the
           Dipneumona, having two lungs: and the Tetrapneumona,
           having four lungs. See Mygale. The former group
           includes several tribes; as, the jumping spiders (see
           Saltigradae), the wolf spiders, or Citigradae (see
           under Wolf), the crab spiders, or Laterigradae (see
           under Crab), the garden, or geometric, spiders, or
           Orbitellae (see under Geometrical, and Garden),
           and others. See Bird spider, under Bird, Grass
           spider, under Grass, House spider, under House,
           Silk spider, under Silk.
           [1913 Webster]
  
     2. (Zool.) Any one of various other arachnids resembling the
        true spiders, especially certain mites, as the red spider
        (see under Red).
        [1913 Webster]
  
     3. An iron pan with a long handle, used as a kitchen utensil
        in frying food. Originally, it had long legs, and was used
        over coals on the hearth.
        [1913 Webster]
  
     4. A trevet to support pans or pots over a fire.
        [1913 Webster]
  
     5. (Mach.) A skeleton, or frame, having radiating arms or
        members, often connected by crosspieces; as, a casting
        forming the hub and spokes to which the rim of a fly wheel
        or large gear is bolted; the body of a piston head; a
        frame for strengthening a core or mold for a casting, etc.
        [1913 Webster]
  
     Spider ant. (Zool.) Same as Solitary ant, under
        Solitary.
  
     Spider crab (Zool.), any one of numerous species of maioid
        crabs having a more or less triangular body and ten long
        legs. Some of the species grow to great size, as the great
        Japanese spider crab ({Macrocheira Kempferi), measuring
        sometimes more than fifteen feet across the legs when they
        are extended.
  
     Spider fly (Zool.), any one of numerous species of
        parasitic dipterous insects of the family Hippoboscidae.
        They are mostly destitute of wings, and live among the
        feathers of birds and the hair of bats. Called also bird
        tick, and bat tick.
  
     Spider hunter (Zool.), any one of several species of East
        Indian sunbirds of the genus Arachnothera.
  
     Spider lines, filaments of a spider's web crossing the
        field of vision in optical instruments; -- used for
        determining the exact position of objects and making
        delicate measurements. Fine wires, silk fibers, or lines
        on glass similarly placed, are called spider lines.
  
     Spider mite. (Zool.)
        (a) Any one of several species of parasitic mites of the
            genus Argas and allied genera. See Argas.
        (b) Any one of numerous small mites injurious to plants.
            
  
     Spider monkey (Zool.), any one of numerous species of South
        American monkeys of the genus Ateles, having very long
        legs and a long prehensile tail.
  
     Spider orchis (Bot.), a European orchidaceous plant
        ({Ophrys aranifera), having flowers which resemble
        spiders.
  
     Spider shell (Zool.), any shell of the genus Pteroceras.
        See Pteroceras.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  spider
      n 1: predatory arachnid with eight legs, two poison fangs, two
           feelers, and usually two silk-spinning organs at the back
           end of the body; they spin silk to make cocoons for eggs or
           traps for prey
      2: a computer program that prowls the internet looking for
         publicly accessible resources that can be added to a
         database; the database can then be searched with a search
         engine [syn: spider, wanderer]
      3: a skillet made of cast iron

From Moby Thesaurus II by Grady Ward, 1.0 :

  39 Moby Thesaurus words for "spider":
     Chilopoda, Chordata, Echiuroidea, Ectoprocta, Entoprocta,
     Monoplacophora, Nemertinea, Phoronidea, arachnid, arthropod,
     beetle, bug, caterpillar, centipede, chilopod, daddy longlegs,
     diplopod, fly, harvestman, hexapod, insect, jenny, larva, maggot,
     millepede, millipede, mite, mule, nymph, scorpion, silkworm,
     skillet, spinner, spinning frame, spinning jenny, spinster,
     tarantula, throstle, tick
  
  

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  spider
  
  
      The Web-walking part of a search engine that collects pages for indexing in
      the search engine's database. Also called a bot. The best-known spider is
      Scooter, the web-walker for the Alta Vista search engine.
  

From The Free On-line Dictionary of Computing (18 March 2015) :

  spider
  
      (Or "robot", "crawler") A program that
     automatically explores the web by retrieving a
     document and recursively retrieving some or all the documents
     that are referenced in it.  This is in contrast with a normal
     web browser operated by a human that doesn't automatically
     follow links other than inline images and URL redirection.
  
     The algorithm used to pick which references to follow
     strongly depends on the program's purpose.  Index-building
     spiders usually retrieve a significant proportion of the
     references.  The other extreme is spiders that try to validate
     the references in a set of documents; these usually do not
     retrieve any of the links apart from redirections.
  
     The standard for robot exclusion is designed to avoid some
     problems with spiders.
  
     Early examples were Lycos and WebCrawler.
  
     Home
     http://info.webcrawler.com/mak/projects/robots/robots.html)">(http://info.webcrawler.com/mak/projects/robots/robots.html).
  
     (2001-04-30)
  

From Easton's 1897 Bible Dictionary :

  Spider
     The trust of the hypocrite is compared to the spider's web or
     house (Job 8:14). It is said of the wicked by Isaiah that they
     "weave the spider's web" (59:5), i.e., their works and designs
     are, like the spider's web, vain and useless. The Hebrew word
     here used is _'akkabish_, "a swift weaver."
     
       In Prov. 30:28 a different Hebrew word (semamith) is used. It
     is rendered in the Vulgate by stellio, and in the Revised
     Version by "lizard." It may, however, represent the spider, of
     which there are, it is said, about seven hundred species in
     Palestine.
     

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