It gives one pull in the field of farming (7)
I believe the answer is:
tractor
'field of farming' is the definition.
The definition and answer 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?
'it gives one pull in the' is the wordplay.
I cannot really see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is located in the answer.
'one' could be 'a' (a thing is one thing) and 'a' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for tractor that I've seen before include "Vehicle used for hauling heavy loads" , "Agricultural machine" , "I can draw" , "Bombardier possibly" , "Farm machine used for pulling" .)