Definition of crawler in English:



  • 1A thing that crawls or moves at a slow pace, especially an insect.

    ‘the light bulb was a magnet for moths and many-legged crawlers’
    • ‘We're lucky we haven't seen any crawlers yet.’
    • ‘Contact insecticide sprays will not reach crawlers that have settled under old scales.’
    • ‘Young crawlers settle on the upper surface of immature leaves, causing galls to form on the under surface of the leaves.’
    • ‘They are found on every continent except Antarctica, in such diverse modes of life as climbers, burrowers, crawlers, aquatic forms, and even gliding types.’
    • ‘An insecticide can be used to kill crawlers once they are detected.’
    • ‘While most of these creepy crawlers have beneficial characteristics, ticks truly deserve to be given a wide berth.’
    • ‘All stages of the insect, except the crawler and the adult male, secrete a covering that lies over its dorsum for protection.’
    • ‘He has worked on more than 300 Hollywood movies involving snakes, lizards, spiders, and other creepy crawlers.’
    • ‘I am not going into that pitch-black cave with all them creepy crawlers and who knows what else.’
    • ‘With first graders on hands and knees, eyes peeled on the tarantula at hand, Trevino goes into his spiel on the life and times of spiders and other creepy crawlers.’
    • ‘Mature female scales are viviparous and produce 2-3 crawlers per day, totaling 100-150 over the female's lifetime.’
    • ‘The night crawlers moved freely around them with their sounds echoing in the wilderness.’
    1. 1.1 A tractor or other vehicle moving on an endless caterpillar track.
      ‘the crawlers move space shuttles to the launch pads’
      as modifier ‘a crawler excavator’
      • ‘Table 4 gives examples of time needed to clear land using two different sizes of crawler tractors.’
      • ‘Once he had separated the piece enough to get a chain around it, then a crawler crane came into play.’
      • ‘The A59 in that section comprises two lanes plus a crawler lane for slow traffic going uphill.’
      • ‘Four fully hydraulic crawler cranes with a capacity of 80 kN operated the grabs.’
      • ‘An example of a ‘group’ linked cost is the cost of providing crawler lanes for heavy vehicles.’
      • ‘Fifty workers using five crawler cranes will be at the site six days a week.’
      • ‘The surface of the road is to be replaced, and the crawler lane is to be closed and turned into a single lane road.’
      • ‘They also back a series of road safety measures and traffic restrictions, including crawler lanes, realigning bends and traffic lights.’
      • ‘One of the most important aspects of new models of crawler dozers is the comfort of the operator.’
      • ‘Essex Crane, which serves contractors nationwide, owns 500 crawler cranes in its fleet.’
      • ‘Eradicating the crawler lane would mean heavy lorries slowing down the traffic up Golden Hill.’
      • ‘The speed makes up for the energy difference between this method and dropping a heavy weight from a crawler crane's jib, and there is no flying debris.’
      • ‘The whole assembly was carried to the launch pad on a vehicle known as a crawler transporter.’
      • ‘The crawler lane is intended to be a safety feature.’
      • ‘Is it true that Caterpillar India is planning to roll out a new crawler tractor?’
      • ‘It does not include any plans to close the crawler lane up the hill.’
      • ‘Contractors are also performing more lifts from outside the building where crawler cranes have greater mobility and stability.’
      • ‘The use of crawler cranes is increasing and may be required in some cases.’
      • ‘To avoid interfering with steel erection, the precast seating risers followed the steel at night, using the same crawler cranes.’
  • 2Computing
    A program that systematically browses the World Wide Web in order to create an index of data.

    • ‘While the search crawlers will ultimately find you on their own, there is some merit in submitting your site manually.’
    • ‘Search engine crawlers will crawl web pages periodically for updated contents.’
    • ‘Wouldn't it be nice to be able to leave some code in your web site to tell the search engine spider crawlers to make your site number one?’
    • ‘Might search engines employing crawlers drop free listings altogether to concentrate on paid inclusion programs?’
    • ‘Search engines allow keyword searches and use crawlers to locate sites or pages that match requests.’
  • 3British informal A person who behaves obsequiously in the hope of gaining favour.

    ‘her pleading tone surprised herself, she was no crawler’
    sycophant, toady, lackey, flunkey, minion, stooge, kowtower, truckler, groveller, creep, fawner, flatterer, lickspittle, uriah heep, puppet, cat's paw, instrument, pawn, underling, hanger-on, camp follower, doormat, spaniel
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