1. a device that turns aside or redirects something, especially air, water, light, or other substances

Examples

• The wind deflector on the sunroof reduced noise while driving.
• Heat deflectors protect the engine components from excessive temperatures.
• The spacecraft’s deflector shields protected it from space debris.
• A light deflector was installed to redirect the harsh glare.
• The rain deflector kept water from entering the ventilation system.
• Air deflectors on the truck improved its aerodynamics.
• The deflector plate channeled the exhaust gases away from the building.