HALIDE
Set to 2 different clues across 2 published puzzles, most often “Chlorine or bromine compound” — The New York Times, Tuesday, 21 February 2006.
6 letters
Every clue on record, most used first
- Chlorine or bromine compoundonce
The New York Times — Tuesday, 21 February 2006
- Lighting compoundonce
The New York Times — Saturday, 25 February 1995