Wiktionary
n. A device that is outside the computer's system unit, such as a printer or a scanner.
WordNet
n. (computer science) electronic equipment connected by cable to the CPU of a computer; "disk drives and printers are important peripherals" [syn: peripheral, computer peripheral]
Usage examples of "peripheral device".
While the female tech went on to offer additional statistics, Han-with his back to a peripheral device he hoped would prove the path of least resistance-slotted the disk, which Baffle promised would literally disappear once it had worked its sorcery.
The laser that kept jabbing Hiro in the eye was shot out of this guy's computer, from a peripheral device that sits above his goggles in the middle of his forehead.
Any hardware maker bringing a new video card or peripheral device to market today knows that it will be unsalable unless it comes with the hardware-specific code that will make it work under Windows, and so each hardware maker has accepted the burden of creating and maintaining its own library of drivers.