Majestic order for lager (5)
I believe the answer is:
regal
'majestic' is the definition.
(I know that majestic can be written as regal)
'order for lager' is the wordplay.
'order for' indicates an anagram.
'lager' is an anagram of 'REGAL'.
(Other definitions for regal that I've seen before include "Portable organ" , "Fit for a monarch" , "befitting a king" , "Kingly or queenly" , "King-like" .)