Producer of draught beers, first of which floors leader of men (7)
I believe the answer is:
bellows
'producer of draught' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'beers first of which floors leader of men' is the wordplay.
I cannot really see how this works, but
'first' could be 'low' ('low' can be a synonym of 'first') and 'low' is present in the answer.
The remaining letters 'bels' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bellows that I've seen before include "Shouts loudly" , "Air blower for fire" , "Roars at part of the organ" , "Accordion part" , "Instrument for creating a stream of air" .)