an island of Hawaii northwest of Oahu

Kauai (usually spelled Kauai outside the Hawaiian Islands and pronounced kawa-ee) is the oldest and fourth largest of the main Hawaiian Islands, having an area of 1,430.43 km² (552.29 sq mi). Known also as the "Garden Isle", Kauai lies 105 miles (170 kilometers) across the Kaua‘i Channel, northwest of Oahu. Of volcanic origin, the highest peak on this mountainous island is Kawaikini at 1,598 m (5,243 ft).