The Collaborative International Dictionary of English v.0.48:

Wind-break \Wind"-break`\, v. t.
   To break the wind of; to cause to lose breath; to exhaust.
   [R.]
   [1913 Webster]

         'T would wind-break a mule to vie burdens with her.
                                                  --Ford.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Wind-break \Wind"-break`\, n.
   A clump of trees serving for a protection against the force
   of wind. [Local, U. S.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

windbreak
    n 1: hedge or fence of trees designed to lessen the force of the
         wind and reduce erosion [syn: windbreak, shelterbelt]