The Bulldogs of the Ivy League (4)
I believe the answer is:
yale
'the bulldogs of the ivy league' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for yale that I've seen before include "University man" , "Mass. university" , "US Ivy League university" , "Very important university" , "US university; lock" .)