from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang A dull place, thing, or condition: "You're on the down escalator to doubt, dullsville, and despair” ( James Wolcott).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A fictional or generic location that is boring or dull.
- n. A state or condition of boredom or disinterest.
From dull + -ville, evoking a (fictional) town. (Wiktionary)