A female runs round for a hairdo (4)
I believe the answer is:
afro
'hairdo' is the definition.
(afro is a kind of hairdo)
'a female runs round for a' is the wordplay.
'a female' becomes 'orf' (I can't justify this - if you can you should believe this answer much more).
'runs round' says the letters should be written backwards (I've seen 'run round' mean this).
'for' means one lot of letters go next to another (I've seen this in other clues).
'orf' in reverse letter order is 'fro'.
'fro' after 'a' is 'AFRO'.
Can you help me to learn more?
(Other definitions for afro that I've seen before include "Hairdo of the 1960s and 70s" , "Hair in tight curls" , "Type of hairstyle - from Africa" , "Big hair?" , "Tightly-curled 4 down" .)