Despite Lillian Mountweazel’s storied career, few art students have ever heard of her. That’s because Lillian Mountweazel never existed. Her life and extraordinary death were invented by the editors of the New Columbia Encyclopedia for one specific reason: to set a trap for would-be information thieves. (Think you have what it takes to be a dictionary editor? Think again!)
It’s called a “fake entry”—but, thanks to a 2005 New Yorker article on the topic, the term “mountweazel” is also accepted. The idea is simple: because it’s impossible to copyright a fact, many reference books like dictionaries, atlases, and encyclopedias guard against plagiarism by including one deliberately false entry in their pages. If the editors should later see the false entry reproduced in some other company’s book, they know they’ve been stolen from. Outed by the mountweazels!
It’s a surprisingly old tradition among reference book publishers that still persists today. And whenever possible, editors have a little fun with it. The New Oxford American Dictionary made waves in 2005 when news got out that there was one such mountweazel hidden among the 3,128 words in the “e” chapter of their newly-released second edition. The offending word? “Esquivalience—n. the willful avoidance of one’s official responsibilities.” Fittingly, the editors of Dictionary.com willfully avoided their official fact-checking responsibilities when they republished “esquivalience” on their site shortly after, unaware that it was phony. (Don’t judge too fast— the most complicated word int eh dictionary is only three letters long.)
Book editors aren’t the only reference publishers in on the joke: map makers been mountweazeling for centuries. In cartography, they’re called “paper towns”—deliberately fictional town, river, or landmark names inserted onto maps as a litmus test for plagiarism. The most famous of these, Agloe, New York, started as a fake entry on a 1930’s state map, only later to become real when a local shopkeeper built the “Agloe General Store” on that exact spot of turnpike in the 1950s. (Today, Agloe is considered a “hamlet” of Delaware County). Other famous map-made mountweazels include Beatosu and Goblu, inserted just over the Ohio border of a Michigan state map in 1978. When properly pronounced—“Beat OSU” and “Go Blue!”—the paper towns become familiar chants to any fans of Michigan football.
The moral of this story? Let’s turn to the (fictional) last words of the late, great Lillian Mountweazel: “Be careful who you steal from. Oh look, a grenade!”