Husband tucked into liqueur that strengthens body (7)
I believe the answer is:
chassis
'body' is the definition.
(chassis is a kind of body)
'husband tucked into liqueur' is the wordplay.
'husband' becomes 'h'.
'tucked into' indicates putting letters inside.
'liqueur' becomes 'cassis' (blackcurrant liqueur).
'h' put within 'cassis' is 'CHASSIS'.
'that strengthens' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for chassis that I've seen before include "Vehicle base frame" , "it strengthens the body" , "Main frame (of vehicle etc)" , "Car frame" , "basic structure" .)