DCHP-1 Online
snow fence 
a fence erected on the windward side of a road or railway to prevent obstruction through drifting.
- 1872 (1873) The high mountains not only protect the valleys from much of the cold, but . . . also act as natural snow fences.
- 1876 Should the adjoining lands be cleared of their timber, a snow fence becomes a necessity, and a thick belt of brush would prove extremely well for that purpose.
- 1963 But I saw farmers . . . mending snow fences. . . .
- 1872 (1873) The high mountains not only protect the valleys from much of the cold, but . . . also act as natural snow fences.