Priam's domain
I believe the answer is:
troy
'priam's domain' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for troy that I've seen before include "Ancient city in Asia Minor" , "Weight system - old city" , "Iliad siege city" , "Ancient city besieged to free beautiful Helen" , "System of weights introduced by French" .)