Closely cropped hairstyle (4,3)
I believe the answer is:
crew cut
'closely cropped hairstyle' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for crew cut that I've seen before include "Redundancies made in naval" , "Style on top" , "Outcome of airline economy study" , "Manpower reduced" , "Very short hairstyle" .)