island-raised; brought up on an island
Describes a person who grew up on an island, often implying a simple, sheltered, or nature-connected upbringing.
He was brought up on an island and is a good swimmer.
Having grown up on an island, she knows the harshness of nature.
Compound of 島 (island) and 育ち (upbringing, from 育つ 'to grow up').