ESKERS
Set to 2 different clues across 2 published puzzles, most often “Glacial ridges” — The New York Times, Thursday, 14 August 2008.
6 letters
Every clue on record, most used first
- Glacial ridgesonce
The New York Times — Thursday, 14 August 2008
- Geological ridgesonce
The New York Times — Wednesday, 8 May 1996