LAMPPOST

Set to 2 different clues across 2 published puzzles, most often “One of a secretive trio” — The New York Times, Sunday, 19 April 1998.

8 letters

Every clue on record, most used first

One of a secretive trioonce
The New York Times — Sunday, 19 April 1998
Part of a proverbially silent trioonce
The New York Times — Friday, 13 October 1995