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Set to 4 different clues across 4 published puzzles, most often “Concavo-convex lens” — The New York Times, Friday, 7 September 2007.
8 letters
Every clue on record, most used first
- Concavo-convex lensonce
The New York Times — Friday, 7 September 2007
- Crescentonce
The New York Times — Friday, 6 October 2006
- Crescent-shaped section of a lensonce
The New York Times — Sunday, 21 September 2003
- Lens with a crescent-shaped sectiononce
The New York Times — Friday, 12 June 1998