Lockmaker of note (4)
I believe the answer is:
yale
'lockmaker of note' 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 in USA" , "Thief might gain entrance after picking this" , "US Ivy League university" , "Member of the 11 - type of lock" , "Mass. university" .)