Spider web

A spider web, spiderweb, spider's web or cobweb (from the obsolete word "coppe", meaning "spider" ) is a device built by a spider out of protein spider silk extruded from its spinneret. Insects can get trapped in spider webs, providing nutrition to the spider; however, not all spiders build webs to catch prey, and some do not build webs at all. The word "cobweb" is usually used for a web inside a house, where dust has gathered on the sticky silk, forming long, hanging streamers. There are a few types of spider web found in the wild; and many spiders are classified by the webs they weave. Different types of spider webs include: Several different types of silk may be used in web construction, including a "sticky" capture silk, or with "fluffy" capture silk, depending on the type of spider. Webs may be in a vertical plane (most orb webs), a horizontal plane (sheet webs), or at any angle in between. Most commonly found in the sheet-web spider families, some webs will have loose,... full article at wikipedia