electric fence

plural electric fences · alternative electrical fence

1. A fence containing metal wire through which an electric current is passed, as a deterrent which will shock people or animals trying to breach or climb the fence.

   To ward off deer, Mr. Haas, an ornithologist, has installed an electric fence around his garden in the park.

   1985 September 29, Lindsey Gruson, “Despite protests, deer hunts are set”, in New York Times, retrieved 22 Jan 2013

   1 more example

   [W]hen Republican presidential hopeful Herman Cain joked about a killer electric fence to keep migrants out, political electric shocks surged rapidly south of the Rio Grande.

   2011 October 17, Ioan Grillo, “Cain's Electrified-Border Joke: No Laughing Matter in Mexico”, in Time