College major, for short (5)
I believe the answer is:
psych
'college major for short' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for psych that I've seen before include "To subject to mind games" , "Intimidate someone by making him feel uneasy" , "Mind doctor (colloquial abbreviation)" , "Stimulate" .)