Player holding a number of records (7)
I believe the answer is:
jukebox
'number of records' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for jukebox that I've seen before include "Pub record player" , "Mechanical record player" , "Musical slot machine" , "Record-player" , "Music playing slot-machine" .)