Cut buns over on couch (7)
I believe the answer is:
snubbed
'cut' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives occasionally mean the same thing.
'buns over on couch' is the wordplay.
'over' says the letters should be written backwards.
'on' means one lot of letters go next to another.
'couch' becomes 'bed' (I've seen this before).
'buns' written backwards gives 'snub'.
'snub'+'bed'='SNUBBED'
Can you help me to learn more?
(Other definitions for snubbed that I've seen before include "Cold-shouldered" , "Spurned" , "affected by cruel cuts" , "Given the cold shoulder" , "Rebuffed, insulted" .)