Leave cloth fringing couch (6)
I believe the answer is:
quitch
'leave' is the definition.
Both the answer and definition are singular nouns.
Maybe you can see an association between them that I don't see?
'cloth fringing couch' is the wordplay.
'cloth' becomes 'quit' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'fringing' means to remove the middle letters (I've seen 'fringes of' mean this).
'couch' with its centre removed is 'ch'.
'quit'+'ch'='QUITCH'
Can you help me to learn more?
(Other definitions for quitch that I've seen before include "move as before" , "Couch grass" .)