/ ɪˈstæblɪʃmənt; NAmE / noun
1.
[ C ] ( formal ) an organization, a large institution or a hotel :
an educational establishment
a research establishment
The hotel is a comfortable and well-run establishment.
2.
(usually the Establishment ) [ sing.+ sing./pl. v . ] (often disapproving ) the people in a society or a profession who have influence and power and who usually do not support change :
the medical / military / political, etc. establishment
young people rebelling against the Establishment
3.
[ U ] the act of starting or creating sth that is meant to last for a long time :
The speaker announced the establishment of a new college.
the establishment of diplomatic relations between the countries