Isle

Definition:

(n.) See Aisle.
(n.) An island.
(n.) A spot within another of a different color, as upon the wings of some insects.
(v. t.) To cause to become an island, or like an island; to surround or encompass; to island.

Compare isle with other words:

insulation vs. isle

insulate vs. isle

islander vs. isle

island vs. isle