What is the meaning of Windshield?

A transparent screen made of glass, located at the front and back of a vehicle in front of its occupants to protect them from the wind force generated by the vehicle's speed and inclement weather.

A cover for a microphone to exclude airy noises such as wind and breathing.

A lightweight aerodynamic fairing mounted on the nose of an armor-piercing shell to reduce drag and increase range.

To install a windshield on.

Source: wiktionary.org