windage


From The Collaborative International Dictionary of English v.0.48:

Windage \Wind"age\, n. [From Wind air in motion.]
   [1913 Webster]
   1. (Gun.) The difference between the diameter of the bore of
      a gun and that of the shot fired from it.
      [1913 Webster]

   2. The sudden compression of the air caused by a projectile
      in passing close to another body.
      [1913 Webster]
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