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3 definitions found
 for crawler
From The Collaborative International Dictionary of English v.0.48 :

  Crawler \Crawl"er\ (kr?l"?r), n.
     One who, or that which, crawls; a creeper; a reptile.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

  crawler
      n 1: a person who tries to please someone in order to gain a
           personal advantage [syn: sycophant, toady, crawler,
           lackey, ass-kisser]
      2: a person who crawls or creeps along the ground [syn:
         crawler, creeper]
      3: terrestrial worm that burrows into and helps aerate soil;
         often surfaces when the ground is cool or wet; used as bait
         by anglers [syn: earthworm, angleworm, fishworm,
         fishing worm, wiggler, nightwalker, nightcrawler,
         crawler, dew worm, red worm]

From The Free On-line Dictionary of Computing (30 December 2018) :

  robot
  crawler
  
     1.  A mechanical device for performing a task which
     might otherwise be done by a human, e.g. spraying paint on
     cars.
  
     See also cybernetics.
  
     2.  An IRC or MUD user who is actually a program.
     On IRC, typically the robot provides some useful service.
     Examples are NickServ, which tries to prevent random users
     from adopting nicks already claimed by others, and MsgServ,
     which allows one to send asynchronous messages to be
     delivered when the recipient signs on.  Also common are
     "annoybots", such as KissServ, which perform no useful
     function except to send cute messages to other people.
     Service robots are less common on MUDs; but some others,
     such as the "Julia" robot active in 1990--91, have been
     remarkably impressive Turing test experiments, able to pass
     as human for as long as ten or fifteen minutes of
     conversation.
  
     3.  spider.
  
     [{Jargon File]
  
     (1996-03-23)
  

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