Colonel, old doctor and I going to a S American country (8)
I believe the answer is:
colombia
'country' is the definition.
(Colombia is an example)
'colonel old doctor and i going to a' is the wordplay.
'colonel' becomes 'col'.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus).
'and' means one lot of letters go next to another.
'going to' means one lot of letters go next to another.
'col'+'o'+'mb'+'i'+'a'='COLOMBIA'
's american' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for colombia that I've seen before include "Northwestern republic in South America" , "Bogot++ is its capital" , "S American state" , "Coffee-exporting South American country" , "Bogota is its capital" .)