What does "flatland" mean?

Synonym of plain (“land of relatively constant altitude”).

Flatland

Common synonyms include: alkali flat, alluvial plain, basin, billiard table, bottomland, bowling green.

noun, slang

noun, slang ·2 syllables ·Moderate ·High school level

Noun

1
Synonym of plain (“land of relatively constant altitude”).
"After crossing the flatlands Lincoln, with its magnificent hilltop cathedral, comes into view before we pull into the station, with its lovely Tudor revival-style buildings."
2
An urban region with many flats or apartments to rent. Ireland, colloquial
"Back then, at eighteen, in her humble bed-sit, in Dublin's 'flatland', she was lonely."

"Russia was vulnerable because of the flatland of what is commonly known as the Northern European Plain."

From flat + land.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.