a kind of rail fence in which the rails, often of split cedar, in panels of six or eight, interlock with each other in a zigzag pattern, being sometimes supported by crossed-rail uprights.
1918  And then when they looked down those first winrows which looked like a "snake (rail) fence," their chagrin was complete, but they soon learned the trick of keeping them straight.
1958  One of the early Canadian fences most popular in the east was the snake rail fence.