dean's

Dean's is the possessive form of dean, indicating something belonging to or associated with a dean—typically the administrative head of a college, university division, or faculty.

The most common use is in dean's list, an academic honor roll recognizing students who achieve high grades during a semester.

She made the dean's list three semesters in a row.

It also appears in phrases like dean's office or dean's approval, referring to matters under a dean's authority.