Laid-back face (4)
I believe the answer is:
dial
'face' is the definition.
(face of a clock)
'laid-back' is the wordplay.
'back' shows that the letters should be reversed in order.
'laid' back-to-front is 'DIAL'.
(Other definitions for dial that I've seen before include "Ring the clock-face" , "Face with numbers" , "Meter face" , "Coil of yarn" , "feature of old phone?" .)