HTTP HyperText Transfer Protocol, the system used to transfer Web data between the Web site and your browser. Hypertext Hypertext is a concept in which a line of text can point to some other information, either in another document or the same one you're browsing. Web Server A Web server is a computer running a program that provides information to a Web browser. Web documents are managed by the server. The program receives requests from your browser and transmits the Web documents back to you.
Some people use it to mean a computer containing Web documents.