Royal order for lager (5)
I believe the answer is:
regal
'royal' is the definition.
(synonyms)
'order for lager' is the wordplay.
'order for' is an anagram indicator.
'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" .)