Gold region swapped motor-plough (7)
I believe the answer is:
tractor
'motor-plough' is the definition.
I can't judge whether this definition defines the answer.
'gold region swapped' is the wordplay.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'region' becomes 'tract' (both can mean a large piece of land).
'swapped' says to put letters next to each other.
'or' put after 'tract' is 'TRACTOR'.
Can you help me to learn more?
(Other definitions for tractor that I've seen before include "Bombardier possibly" , "Vehicle used on farms" , "Agricultural vehicle" , "I can draw" , "Vehicle for pulling others" .)