Husband puts fish at the back of shoes (5)
I believe the answer is:
heels
'shoes' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps you can see an association between them that I don't see?
'husband puts fish at the back' is the wordplay.
'husband' becomes 'h' (abbreviation).
'puts fish' becomes 'els' (I can't explain this - if you can you should give a lot more credence to this answer).
'at' means one lot of letters go next to another (I've seen this in other clues).
'back' suggests the final letters (the letter at the back).
The final letter of 'the' is 'e'.
'els' put after 'e' is 'eels'.
'h'+'eels'='HEELS'
'of' is the link.
Can you help me to learn more?
(Other definitions for heels that I've seen before include "Blackguards in shoes?" , "Cads - shoe parts" , "Foot parts" , "Parts of shoes" , "Cobbler does this" .)