1. A framed pane of usually curved glass or other transparent shielding located in front of the occupants of a vehicle to protect them from the wind.
2. A shield placed to protect an object from the wind.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.