Distant RAF manoeuvre (3)
I believe the answer is:
far
'distant' is the definition.
(I've seen this before)
'raf manoeuvre' is the wordplay.
'manoeuvre' indicates anagramming the letters.
'raf' anagrammed gives 'FAR'.
(Other definitions for far that I've seen before include "Remote" , "Distant" , "A long, long way to go" , "Very much" , "At a great distance way" .)