Meanings
- USThose counties that lie on the New York-Pennsylvania border on either side of the 42nd parallel north.
Cite this entry
Twin Tiers. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Twin%20Tiers
“Twin Tiers.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Twin%20Tiers. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “Twin Tiers,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Twin%20Tiers.
Source: Twin Tiers on Wiktionary, CC BY-SA 4.0.