The Swedish word for island is
ö

Translations for island and their definitions

ö	©
1. n-c. island
Gotland är den största ön i Östersjön. - Gotland is the largest island in the Baltic Sea.

holme
1. n-c. holme

kobbe
1. n-c. a low, rocky, rounded islet (in a coastal archipelago)

skär
1. adj. (dated) pure, clean
ren och skär tur - pure luck (idiomatic – can also be expressed as "ren tur")
2. adj. pink; having a color between red and white, sometimes with a hint of beige, as in the skin color of white people.
3. n-n. a skerry, an island (especially a small rocky island)
4. v. present indicative of skära
5. v. imperative of skära