transitive. To make into an island by surrounding with water; to convert into an island.

transitive. To make an isle of; to place or set as an isle; to place or set in an isle; to insulate; = island, v. 1.

To make into an isle.

transitive. To make into or as into an island; to place as an island; to place, settle, or enclose on, or as on, an island; to insulate, isolate.

transitive. To render insular or represent as an island.