Jezebel's husband (4)
I believe the answer is:
ahab
'jezebel's husband' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ahab that I've seen before include "Fictional whaler" , "Melville's whale chaser" , "Jezebel was wife of this King of Israel" , "Captain -, pursuer of Moby Dick" , "sea captain" .)