S American revolutionary: more than that, a university teacher (9)
I believe the answer is:
uruguayan
's american' is the definition.
'Uruguayan' can be an answer for 'american' (Uruguayan is an example). I am not certain of the 's' bit.
'revolutionary more than that a university teacher' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is located in the answer.
'university' could be 'u' (abbreviation for university) and 'u' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for uruguayan that I've seen before include "From Montevideo, say?" , "Latin!" , "Eg, native of Montevideo" .)