Have husband, aged (4)
I believe the answer is:
hold
'have' is the definition.
(holding is a kind of having)
'husband aged' is the wordplay.
'husband' becomes 'h'.
'aged' becomes 'old' (similar in meaning).
'h'+'old'='HOLD'
(Other definitions for hold that I've seen before include "Grip" , "Keep; part of ship" , "defend successfully" , "Continue" , "Retain" .)