A cobweb is the net of sticky threads that a spider weaves to catch insects. You can also call a cobweb a spider's web.

A cobweb is any spider's web, although some people use it to specify the dense, tangled type of web that certain spiders weave, or to mean a dusty old web, like the ones you might see in your grandparents' attic. Cobweb can also describe some intricate or complicated things: "She got lost in the cobweb of unfamiliar subway lines in the city." It comes from the Old English coppeweb, from the now-obsolete coppe, "spider."

Definitions of cobweb
  1. noun
    a dense elaborate spider web that is more efficient than the orb web
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    type of:
    spider web, spider's web
    a web spun by spiders to trap insect prey
  2. noun
    filaments from a web that was spun by a spider
    synonyms: gossamer
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    type of:
    fibril, filament, strand
    a very slender natural or synthetic fiber
  3. noun
    a fabric so delicate and transparent as to resemble a web of a spider
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    type of:
    cloth, fabric, material, textile
    artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
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