Find out Rector Slope's around (5)
I believe the answer is:
learn
'find out' is the definition.
(synonyms)
'rector slope's around' is the wordplay.
'rector' becomes 'r'.
'slope' becomes 'lean' (I've seen this before).
'around' means one lot of letters goes inside another.
'r' put inside 'lean' is 'LEARN'.
(Other definitions for learn that I've seen before include "Acquire 28 across" , "Gain knowledge or skill" , "Discover - study" , "Get to know" , "Con" .)