Set off worktop feature (12)
I believe the answer is:
counterpoint
'set' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'worktop feature' is the wordplay.
'worktop' becomes 'counter' (I've seen this before).
'feature' becomes 'point' (I can't justify this - if you can you should believe this answer much more).
'counter'+'point'='COUNTERPOINT'
'off' acts as a link.
Can you help me to learn more?
(Other definitions for counterpoint that I've seen before include "Melody added to another" , "Interplay of melodies" , "Compensate for" , "Combination of melodies" , "Foil" .)