1. (大学或学院的）院长，教务长
A dean is an important official at a university or college.

2. 教长;座堂主任牧师
A dean is a priest who is the main administrator of a large church.

3. 泰斗;首席;资历最深者
The dean of a group is the most important member of that group.

1. an administrator in charge of a division of a university or college

2. (Roman Catholic Church) the head of the College of Cardinals

3. a man who is the senior member of a group

e.g. he is the dean of foreign correspondents

Synonym: doyen