Pub cheering new item (10)
I believe the answer is:
innovation
'new item' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'pub cheering' is the wordplay.
'pub' becomes 'inn' (an inn is a type of pub).
'cheering' becomes 'ovation'.
'inn'+'ovation'='INNOVATION'
Can you help me to learn more?
(Other definitions for innovation that I've seen before include "original" , "New idea" , "Something introduced as a novelty" , "New product" , "What's new" .)