Sultanate salutation (6)
I believe the answer is:
salaam
'sultanate salutation' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for salaam that I've seen before include "Oriental greeting with bow of obeisance" , "An Oriental greeting meaning peace" , "Muslim form of salutation" , "Oriental greeting like low bow" , "Muslim greeting signifying peace" .)