IOLANI

Set to 4 different clues across 4 published puzzles, most often “Honolulu's ___ Palace” — The New York Times, Wednesday, 11 May 2011.

6 letters

Every clue on record, most used first

Honolulu's ___ Palaceonce
The New York Times — Wednesday, 11 May 2011
With 36-Across, only official residence of a reigning monarch now in the United Statesonce
The New York Times — Thursday, 15 October 2009
Historic Honolulu palaceonce
The New York Times — Sunday, 2 April 2006
The only royal palace in the U.S.once
The New York Times — Saturday, 12 November 2005