peripheral
definition: on or near an edge or constituting an outer boundary
example:
speech part: adjective
synonyms:
definition: related to the key issue but not of central importance
example: a peripheral interest
speech part: adjective
synonyms:
definition: (computer science) electronic equipment connected by cable to the CPU of a computer
example: disk drives and printers are important peripherals
speech part: noun
synonyms:
computer peripheral
peripheral device