No gentleman loses his life on the golf course (7)
I believe the answer is:
caddies
'his life on the golf course' is the definition.
The definition suggests a singular noun but the answer is a plural noun.
'no gentleman loses' is the wordplay.
'no gentleman' becomes 'cad' (I've seen this in another clue).
'loses' becomes 'dies' (I can't explain this - if you can you should believe this answer much more).
'cad'+'dies'='CADDIES'
Can you help me to learn more?
(Other definitions for caddies that I've seen before include "Tea cans" , "They carry golf clubs" , "Golf attendants" , "Golf clubs carriers" , "man seen carrying clubs" .)