Huge order for lager (5)
I believe the answer is:
large
'huge' is the definition.
(similar in meaning)
'order for lager' is the wordplay.
'order for' indicates anagramming the letters.
'lager' with letters rearranged gives 'LARGE'.
(Other definitions for large that I've seen before include "Big - 5 down (anag)" , "Strapping" , "Sizable" , "Titanic" , "Bulky" .)