What does server mean

It is a computer that performs a service for other computers on the internet.

It may "serve" (here ya are!) a web page from a pantry of web pages to your computer.

It may "serve" a destination route when one computer comes asking where a website is located.

It may "serve" the "real name" when someone has set up an "alias" for a website name.

It may "serve" you a copy of your email, or "serve" a copy of the email you just sent to somewhere else...

...and like that. (And you don't even have to leave a tip.)

and server got several services,for example:Application server,Communications server,Database server,Proxy server,Fax server,File server,Print server,Game server,Web server and so on.