One going round on this bike? (8)
I believe the answer is:
unicycle
'this bike?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'one going round on' is the wordplay.
'one going' becomes 'uni' (I can't explain this - if you can you should believe this answer much more).
'round' becomes 'cycle' (synonyms).
'on' says to put letters next to each other.
'uni'+'cycle'='UNICYCLE'
Can you help me to learn more?
(Other definitions for unicycle that I've seen before include "One saddled" , "One-wheeler" , "Transport needing good balance" , "Balancing act" , "One-wheeled bike used by acrobats" .)