Definition: A wooded and uninhabited place (Merriam-Webster Online).
Sample usage: "The dog park by the river is a nice urban willowwacks — good for a hike, but mind the bogs of pup poop."
Popularity: It's a word from the U.K., so people will like to use it. Any nonsense word from the U.K. makes you feel delightfully eccentric, right? If it doesn't, you're just a bollywoggle.
JAMES LILEKS
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