| Noun | 1. | windage - the retarding force of air friction on a moving object | |
| 2. | windage - bore-to-projectile difference in diameterdiam, diameter - the length of a straight line passing through the center of a circle and connecting two points on the circumference | |
| 3. | windage - exposure to the wind (as the exposed part of a vessel's hull which is responsible for wind resistance)exposure - vulnerability to the elements; to the action of heat or cold or wind or rain; "exposure to the weather" or "they died from exposure"; | |
| 4. | windage - the deflection of a projectile resulting from the effects of wind | |