Royal order for lager (5)
I believe the answer is:
regal
'royal' is the definition.
('regal' can be a synonym of 'royal')
'order for lager' is the wordplay.
'order for' indicates anagramming the letters.
'lager' is an anagram of 'REGAL'.
(Other definitions for regal that I've seen before include "Fit for a king" , "Magnificent, dignified" , "Royal - 5 down (anag)" , "King's" , "Grand and imposing" .)