Gather husband averts disaster (7)
I believe the answer is:
harvest
'gather' is the definition.
(I know that harvest is a type of gather)
'husband averts disaster' is the wordplay.
'husband' becomes 'h' (abbreviation).
'disaster' indicates an anagram.
'averts' with letters rearranged gives 'arvest'.
'h'+'arvest'='HARVEST'
(Other definitions for harvest that I've seen before include "Bring in the corn etc" , "Crops gathered in" , "Process of gathering mature crops" , "The fruits of tillage" , "Crop gathering" .)