Dictionary.com
definitions

snow fence

noun
  1. a barrier erected on the windward side of a road, house, barn, etc., serving as a protection from drifting snow.

Origin of snow fence

An Americanism dating back to 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for snow fence

snow fence

noun
  1. a portable wire-and-paling fence erected to prevent snow from drifting across a road, drive, ski run, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012