Historically, terms such as "
jailer" (also spelled "
gaoler"), "guard" and "warder" have all been used. Slang terms have included "turnkey", "screw", "tier boot", "hura", "CO", "Cop", "boss", "keeper", and others pending the region or area. The term "prison officer" is used for the role in the UK and Ireland. It is the official English title in Denmark, Finland, Sweden and Poland. The term "corrections officer" or "correction officer" is used in the U.S. and New Zealand. "Detention officer" is used in the U.S., as is the term "penal officer". The term "correctional police officer" or "CPO" is used in New Jersey. Due to the law enforcement status and authority of New Jersey's officers, New Jersey's officers employed by the Department of Corrections are classified as "police officers". Brazil has a similar system to New Jersey, but the officers are known as "state penal police agent" or "federal penal police agent". "Correctional officer" is used in Australia, Canada, Jamaica, and the U.S. In Australia, prison officers were known as turnkeys until the 19th century after which they were known as warders until the late 20th century. Following this period they were known as prison officers and later correctional officers. A slang term for a prison officer throughout the
British Empire was, and still is, 'screw'. The official who is in charge of a specific prison is known by various titles, including: "
prison warden" (US and Canada), "governor" (UK and Australia), "superintendent" (South Asia) or "director" (New Zealand), respectively "Direktor" or "Gefängnisdirektor" (Germany). == Duties ==