Aerobatic maneuver (4)
I believe the answer is:
roll
'aerobatic maneuver' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for roll that I've seen before include "Flatten; register" , "Furl" , "Move by turning over" , "Gymnastic move; bread" , "Move on wheels - individual portion of bread" .)