Hearty eater cut short by that woman's husband (11)
I believe the answer is:
trencherman
'hearty eater cut short by that' is the definition.
'trencherman' can be an answer for 'hearty eater' (I've seen this before). I am not sure about the rest of the definition.
'woman's husband' is the wordplay.
'woman' becomes 'trencher' (I can't justify this - if you can you should believe this answer much more).
'husband' becomes 'man' (a married man).
'trencher'+'man'='TRENCHERMAN'
Can you help me to learn more?
(Other definitions for trencherman that I've seen before include "one enthusiastically taking courses" , "hearty eater" .)