This means that each computer or person within the network acts as both a server and a client. (cryptoxbureau.com)
When a multiplayer game begins, one player acts as the server (the central computer) and all other players connect through that user to each other and the game. (finder.com.au)
Me, I've had pretty good results with an app called Calibre Companion to sync my books onto my Nook over wifi, although take note that Calibre Companion can also connect to Calibre if it's acting as a server for you. (angelahighland.com)