Peripheral
WordNet

adjective


(1)   On or near an edge or constituting an outer boundary; the outer area
"Russia's peripheral provinces"
"Peripheral suburbs"
(2)   Related to the key issue but not of central importance
"A peripheral interest"
"Energy is far from a peripheral issue in the economy"
"Peripheral issues"

noun


(3)   (computer science) electronic equipment connected by cable to the CPU of a computer
"Disk drives and printers are important peripherals"
WiktionaryText

Adjective



  1. on the periphery or boundary
  2. beside the point
  3. unimportant
  4. auxiliary

Noun



  1. a device, such as a printer or scanner, connected to a computer
 
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