Worm fences, also known as zigzag fences, rail fences, or snake fences, are traditional American fences made of wooden rails that are woven together to create a zigzag pattern. These types of fences are commonly used for agricultural purposes, such as keeping livestock contained. The term "worm fence" refers to the curved and undulating appearance of the fence, similar to the movements of a worm. However, there are several other names for this type of fence, including Virginia fence, worm rail fence, and snake rail fence. These names are used interchangeably depending on the region and local traditions. Regardless of the name, worm fences remain a classic and enduring feature of the American landscape.