Hang a left or a right (4)
I believe the answer is:
turn
'hang a left or a right' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for turn that I've seen before include "Spell" , "Distinctive expression" , "Move in a new direction" , "Shock - move - change course" , "See 19" .)