WINDAGE

Definition

1. noun the retarding force of air friction on a moving object.
2. noun the space between the projectile of a smoothbore gun and the surface of the bore of the gun.
3. noun exposure to the wind (as the exposed part of a vessel's hull which is responsible for wind resistance). — synonyms: wind_exposure
4. noun the deflection of a projectile resulting from the effects of wind. — synonyms: wind_deflection