http://lifehacker.com/124212/g.....web-server

The term web server also webserver can mean one of two things:

1. A computer program that is responsible for accepting HTTP requests from clients (user agents such as web browsers), and serving them HTTP responses along with optional data contents, which usually are web pages such as HTML documents and linked objects (images, etc.).
2. A computer that runs a computer program as described above.

Edit by mod: blablabla links removed