Crossword Genius

Asian runner in French south retired (5)

Ross

I believe the answer is:

indus

I'm a little stuck... Click here to teach me more about this clue!

'asian runner' is the definition.
(I've seen this before)

'in french south retired' is the wordplay.
'french south' becomes 'sud' (I am not sure about this - if you are sure you should believe this answer much more).
'retired' says the letters should be written backwards.
'sud' back-to-front is 'dus'.
'in'+'dus'='INDUS'

Can you help me to learn more?

(Other definitions for indus that I've seen before include "running water" , "Main river of Pakistan" , "Pakistani river" , "River of India and Pakistan" , "River of Southern Asia" .)

I've seen this clue in The Sun.
Want a hint initially instead of a full solution? Install my app