Discharge ambassador, nobbled by drink (5)
I believe the answer is:
rheum
'discharge' is the definition.
(I know that rheum is a type of discharge)
'ambassador nobbled by drink' is the wordplay.
I cannot quite understand how this works, but
'ambassador' could be 'he' (His or Her Excellency) and 'he' is located in the answer.
'drink' could be 'rum' (rum is a kind of drink) and 'rum' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rheum that I've seen before include "drips from the nose" , "Discharge of water" , "nasal drops" , "Watery discharge from eyes or nose" , "Catarrh" .)