Study centre curtailed part of course (3)
I believe the answer is:
uni
This could be a double definition.
'study centre' is the first definition.
(university)
'curtailed part of course' is the second definition.
The definition suggests a singular noun which matches the answer.
Can you help me to learn more?
(Other definitions for uni that I've seen before include "educational establishment" , "Reading is one" , "Short for university" , "University (abbreviation)" , "Queen's, Belfast, for example" .)