Escape from Coventry (4)
I believe the answer is:
vent
'escape' is the definition.
(thesaurus)
'from coventry' is the wordplay.
'from' indicates the answer is hidden within the clue.
'VENT' is hidden within 'coventry'.
(Other definitions for vent that I've seen before include "Voice" , "Air passage" , "Broadcast" , "Give free expression to -- opening" , "Opening of a volcano" .)