Spider web

from WordNet (r) 3.0 (2006)

spider web
    n 1: a web resembling the webs spun by spiders [syn: {spider
         web}, {spider's web}]
    2: a web spun by spiders to trap insect prey [syn: {spider web},
       {spider's web}]

from The Collaborative International Dictionary of English v.0.48

Spider web \Spi"der web"\, or Spider's web \Spi"der's web"\ .
   (Zool.)
   The silken web which is formed by most kinds of spiders,
   particularly the web spun to entrap their prey; -- also
   called {cobweb}. See {Geometric spider}, {Triangle spider},
   under {Geometric}, and {Triangle}.
   [1913 Webster]