Minor accident on field when ahead (7)
I believe the answer is:
leading
'ahead' is the definition.
(synonyms)
'minor accident on field' is the wordplay.
'minor accident' becomes 'ding' (I can't explain this - if you can you should believe this answer much more).
'on' means one lot of letters go next to another.
'field' becomes 'lea' (lea can mean a meadow or field of grass).
'ding' after 'lea' is 'LEADING'.
'when' acts as a link.
Can you help me to learn more?
(Other definitions for leading that I've seen before include "In pole position" , "In first place; space between lines of print" , "Female top of the bill" , "'Showing the way, out in front (7)'" , "In the chair" .)