windshield

Short definition from Wiktionary

Noun

1. 1
   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.
2. 2
   A cover for a microphone to exclude airy noises such as wind and breathing.
3. 3
   A lightweight aerodynamic fairing mounted on the nose of an armor-piercing shell to reduce drag and increase range.

Verb

1. 1
   To install a windshield on.