1. a piece of land that is completely surrounded by water
2. something that resembles an island by being isolated or surrounded

1. to make into an island or isolate
Usage: rare

Examples

• Hawaii is a group of volcanic islands in the Pacific Ocean.
• The small island had only a few palm trees and white sand.
• Manhattan is an island surrounded by rivers.
• The kitchen island provided extra counter space for cooking.
• An island of trees stood in the middle of the prairie.
• The flood waters islanded the farmhouse for three days.