leech

from WordNet (r) 3.0 (2006)
leech
    n 1: carnivorous or bloodsucking aquatic or terrestrial worms
         typically having a sucker at each end [syn: {leech},
         {bloodsucker}, {hirudinean}]
    2: a follower who hangs around a host (without benefit to the
       host) in hope of gain or advantage [syn: {leech}, {parasite},
       {sponge}, {sponger}]
    v 1: draw blood; "In the old days, doctors routinely bled
         patients as part of the treatment" [syn: {bleed}, {leech},
         {phlebotomize}, {phlebotomise}]
    
from The Collaborative International Dictionary of English v.0.48
Leech \Leech\ (l[=e]ch), n.
   See 2d {Leach}.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Leech \Leech\, v. t.
   See {Leach}, v. t.
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Leech \Leech\, n. [Cf. LG. leik, Icel. l[imac]k, Sw. lik
   boltrope, st[*a]ende liken the leeches.] (Naut.)
   The border or edge at the side of a sail. [Written also
   {leach}.]
   [1913 Webster]

   {Leech line}, a line attached to the leech ropes of sails,
      passing up through blocks on the yards, to haul the
      leeches by. --Totten.

   {Leech rope}, that part of the boltrope to which the side of
      a sail is sewed.
      [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Leech \Leech\, n. [OE. leche, l[ae]che, physician, AS. l[=ae]ce;
   akin to Fries. l[=e]tza, OHG. l[=a]hh[imac], Icel.
   l[ae]knari, Sw. l[aum]kare, Dan. l[ae]ge, Goth. l[=e]keis,
   AS. l[=a]cnian to heal, Sw. l[aum]ka, Dan. l[ae]ge, Icel.
   l[ae]kna, Goth. l[=e]kin[=o]n.]
   1. A physician or surgeon; a professor of the art of healing.
      [Written also {leach}.] [Archaic] --Spenser.
      [1913 Webster]

            Leech, heal thyself.                  --Wyclif (Luke
                                                  iv. 23).

   2. (Zool.) Any one of numerous genera and species of annulose
      worms, belonging to the order {Hirudinea}, or Bdelloidea,
      esp. those species used in medicine, as {Hirudo
      medicinalis} of Europe, and allied species.
      [1913 Webster]

   Note: In the mouth of bloodsucking leeches are three
         convergent, serrated jaws, moved by strong muscles. By
         the motion of these jaws a stellate incision is made in
         the skin, through which the leech sucks blood till it
         is gorged, and then drops off. The stomach has large
         pouches on each side to hold the blood. The common
         large bloodsucking leech of America ({Macrobdella
         decora}) is dark olive above, and red below, with black
         spots. Many kinds of leeches are parasitic on fishes;
         others feed upon worms and mollusks, and have no jaws
         for drawing blood. See {Bdelloidea}. {Hirudinea}, and
         {Clepsine}.
         [1913 Webster]

   3. (Surg.) A glass tube of peculiar construction, adapted for
      drawing blood from a scarified part by means of a vacuum.
      [1913 Webster]

   {Horse leech}, a less powerful European leech ({H[ae]mopis
      vorax}), commonly attacking the membrane that lines the
      inside of the mouth and nostrils of animals that drink at
      pools where it lives.
      [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Leech \Leech\, v. t. [imp. & p. p. {Leeched} (l[=e]cht); p. pr.
   & vb. n. {Leeching}.]
   1. To treat as a surgeon; to doctor; as, to leech wounds.
      [Archaic]
      [1913 Webster]

   2. To bleed by the use of leeches.
      [1913 Webster]
    
from Jargon File (4.4.4, 14 Aug 2003)
leech


   1. n. (Also leecher.) Among BBS types, crackers and {warez d00dz}, one
   who consumes knowledge without generating new software, cracks, or
   techniques. BBS culture specifically defines a leech as someone who
   downloads files with few or no uploads in return, and who does not
   contribute to the message section. Cracker culture extends this
   definition to someone (a {lamer}, usually) who constantly presses
   informed sources for information and/or assistance, but has nothing to
   contribute. See {troughie}.

   2. v. [common, Toronto area] v. To download a file across any kind of
   internet link. "Hop on IRC later so I can leech some MP3s from you."
   Used to describe activities ranging from FTP, to IRC DCC-send, to ICQ
   file requests, to Napster searches (but never to downloading email
   with file attachments; the implication is that the download is the
   result of a browse or search of some sort of file server). Seems to be
   a holdover from the early 1990s when Toronto had a very active BBS and
   warez scene. Synonymous with {snarf} (sense 2), and contrast {snarf}
   (sense 4).
    
from The Free On-line Dictionary of Computing (8 July 2008)
leech

   <networking> Someone who {downloads} files but provides
   nothing for others to download.  The term is common on
   {BitTorrent}, which relies on having multiple sources for
   files to improve download speed.

   (2007-03-27)
    
from Moby Thesaurus II by Grady Ward, 1.0
105 Moby Thesaurus words for "leech":
      Chilopoda, Chordata, Doctor of Medicine, Echiuroidea, Ectoprocta,
      Entoprocta, GP, MD, Monoplacophora, Nemertinea, Phoronidea,
      adherent, adhesive, allopath, allopathist, attending physician,
      barnacle, beat, bedbug, blackmailer, bleed, bloodsucker, boltrope,
      bramble, brier, bulldog, burr, canvas, cement, clew, cloth,
      coroner, country doctor, cringle, croaker, crowd of sail, cup,
      deadbeat, decal, decalcomania, doc, doctor, earing, extortionist,
      family doctor, foot, fore-and-aft sail, freeloader,
      general practitioner, give a transfusion, glue, gunk, harpy, head,
      house physician, intern, let blood, limpet, luff,
      medical attendant, medical examiner, medical man,
      medical practitioner, medico, molasses, mosquito, mucilage, muslin,
      parasite, paste, perfuse, phlebotomize, physician,
      physician in ordinary, plain sail, plaster, predator,
      press of sail, prickle, profiteer, racketeer, rag, raptor,
      reduced sail, reef point, reefed sail, remora, resident,
      resident physician, sail, sawbones, shakedown artist, shark,
      smell-feast, sponge, sponger, square sail, sticker, syrup, thorn,
      tick, transfuse, vampire, vulture, wood tick

    

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