windbreak

A hedge, fence or row of trees positioned to reduce wind damage to crops.

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.

The act of breaking wind; flatulence.

• (see title)
• Another of Roy's room-clearing wind breaks snapped my head back.