all-in-one

(1) A combination computer printer, scanner, copy machine and fax machine. Some all-in-ones exclude the fax capability or make it an option.

(2) A desktop computer that houses every component except the keyboard and mouse inside the same case as the monitor. The major advantage to an all-in-one computer is that it takes up considerably less desk space.

iMac All-In-One

The iMac has been a very popular all-in-one computer. The only external components that come with the machine are the keyboard and mouse. (Image courtesy of Apple Inc.)