EBONITE
Set to 3 different clues across 3 published puzzles, most often “Bowling ball material” — The New York Times, Thursday, 2 November 2000.
7 letters
Every clue on record, most used first
- Bowling ball materialonce
The New York Times — Thursday, 2 November 2000
- Comb rubberonce
The New York Times — Friday, 11 February 2000
- Electrical insulation materialonce
The New York Times — Thursday, 22 July 1999