Hair tangle (5)
I believe the answer is:
snarl
'hair tangle' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for snarl that I've seen before include "Growl viciously" , "Tangle; growl" , "Growl in a threatening manner" , "A vicious angry growl" , "Growl with bared teeth" .)