isle
/aɪl/noun
- chiefly poetic/literary an island or peninsula, especially a small one〈主诗/文〉小岛; 小半岛：
Crusoe's fabled isle
鲁滨孙（漂流记）中传说的小岛
in place names the British Isles.不列颠群岛。
词源
Middle English ile, from Old French, from Latin insula. The spelling with s （also in 15th-cent. French） is influenced by Latin.