peripheral
adjectiveUK /pəˈrɪf.ər.əl/
US /pəˈrɪf.ɚ.əl/
On the outside edge of something, not in the middle.
The house sits on the peripheral edge of the town, far from the shops.
OTHER MEANINGS
2. Not very important compared to the main thing.
The cost was a peripheral issue compared to the safety problem.
3. A device you plug into a computer, like a mouse or keyboard.
She bought a new keyboard and other computer peripherals.
4. Relating to the nerves or blood vessels at the outer parts of the body.
The doctor checked his peripheral vision during the eye test.