Youngster finds pressure at university (3)
I believe the answer is:
pup
'youngster' is the definition.
(a pup is a young dog)
'pressure at university' is the wordplay.
'pressure' becomes 'p' (abbreviation).
'at university' becomes 'up' ('up' can mean studying at university).
'p'+'up'='PUP'
'finds' is the link.
(Other definitions for pup that I've seen before include "Small palindromic dog" , "Young dog as palindrome" , "Whelp" , "Young seal" , "Young of various animals" .)