Royal staff (7)
I believe the answer is:
sceptre
'royal staff' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sceptre that I've seen before include "Royal staff (paired with 2 down)" , "Respect (anag) -- symbol of ruler's authority" , "Monarch's ceremonial staff" , "Emblem of royalty" , "Queen's staff" .)