Turnkey
Another name for a prison chief could be a warden or a prison director.
The warden or governor, depending on which country you are in.
The prison warden locked down all of the cells. He was the warden of the woods.
guardian,warden.
The Poptropica warden and scientist are at the "County Prison".
A warden could be a prison warden: a person in charge of a game reserve; a Youth Hostel Warden, and so on.
warden
Obama
The person that is over a prison is the Warden.
The prison chief is typically referred to as the warden. They are responsible for overseeing the operations and management of the prison, including staff supervision, inmate welfare, and security.
There are a number obligations that a prison warden has to a Governor. This includes frequent updates on the events happening there and seeking approval of any changes or improvement of the prison facilities.
A warden.