1. a fabric tube that is open at both ends and mounted on a pole to show wind direction and speed
Usage: commonly used at airports and airfields

Examples

• The pilot checked the windsock before takeoff to determine wind conditions.
• A bright orange windsock fluttered at the end of the runway.
• The windsock indicated strong crosswinds from the west.
• Small aircraft rely on windsocks for safe landing approaches.
• The airport installed a new windsock near the control tower.
• Wind direction can be easily determined by observing the windsock.