squirrel guard
 n.— «Spidery-looking bits of metal and inexpensive pieces of plastic are at the heart of one of the most important strategies Entergy Texas has to prevent power outages. Commonly called squirrel guards, more than 100,000 of them are perched atop poles throughout Southeast Texas, effectively preventing the furry critters from coming into contact with equipment that has the potential to kill the animals while also causing a fault that would turn the lights off for Entergy customers.» —“‘Squirrely’ power outages pack unpopular punch” Hardin County News (Lumberton, Texas) Jan. 17, 2007. (source: Double-Tongued Dictionary)

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