Answer:

shahs

Answer	Crossword Clue
SHAHS	Palindromic leaders
SHAHS	Palindromic rulers
SHAHS	Bygone kings

SHAHS	Persian rulers
SHAHS	Bygone leaders
SHAHS	Mughal Empire rulers
SHAHS	Former Iranian leaders
SHAHS	Bygone royalty
SHAHS	Persian potentates
SHAHS	Figures in Iranian history
SHAHS	Former Iranian rulers

SHAHS	Leaders of the Safavid dynasty
SHAHS	Persian kings
SHAHS	Rulers with thrones
SHAHS	Ayatollahs' predecessors
SHAHS	Iranian royalty
SHAHS	Pre-Ayatollah rulers
SHAHS	Peacock Throne occupants