Husband flees cabin fire (4)
I believe the answer is:
sack
'fire' is the definition.
(dismiss someone from their job)
'husband flees cabin' is the wordplay.
'husband' becomes 'h'.
'flees' is a deletion indicator.
'cabin' becomes 'shack' (I have seen 'Rough cabin ' mean 'shack' so perhaps 'cabin' could also mean 'shack').
'shack' with 'h' taken away is 'SACK'.
(Other definitions for sack that I've seen before include "Bag; pillage and destroy" , "Fire - old Spanish wine" , "Dismiss, terminate employment" , "Elbow" , "Plundering of captured town" .)