Farm workhorse with men on piece of land (7)
I believe the answer is:
tractor
'farm workhorse' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'men on piece of land' is the wordplay.
'men' becomes 'OR' (military abbreviation for Other Ranks).
'on' means one lot of letters go next to another.
'piece of land' becomes 'tract' (synonyms).
'or' after 'tract' is 'TRACTOR'.
'with' is the link.
Can you help me to learn more?
(Other definitions for tractor that I've seen before include "I can draw" , "Powerful farm vehicle for heavy work" , "Vehicle for pulling others" , "Type of truck with a a cab but no body" , "Agricultural machine" .)