Joint league leader? (7)
I believe the answer is:
topside
This clue could be a double definition.
'joint' is the first definition.
(joint of beef)
'league leader?' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
Can you help me to learn more?
(Other definitions for topside that I've seen before include "a cut above the others?" , "Deposit (anag) -- cut of meat" , "Towards ship's upper decks; part of cut of beef" , "Joint" , "Outer cut of beef" .)