windbreak

noun3

1. •
   A hedge, fence or row of trees positioned to reduce wind damage to crops.
2. •
   A sheet or stack of material used to protect people or fire from wind.

   • I built my windbreak on a second-story wooden deck, as you can see above, but it would work just as well at ground level. — 1964
3. •
   The act of breaking wind; flatulence.

   • Another of Roy's room-clearing wind breaks snapped my head back. — 1996