Scoff and run away (4)
I believe the answer is:
bolt
I believe this clue is a double definition.
'scoff' is the first definition.
(thesaurus)
'run away' is the second definition.
(I've seen this in another clue)
'and' is the link.
(Other definitions for bolt that I've seen before include "one may be shot" , "Eat hurriedly" , "eat food quickly and > lock up" , "It makes fast" , "Fastening pin; run away" .)