What is the meaning of Ministry?

Government department, at the administrative level normally headed by a minister (or equivalent rank, e.g. secretary of state), who holds it as portfolio, especially in a constitutional monarchy, but also as a polity

The complete body of government ministers (whether or not they are in cabinet) under the leadership of a head of government (such as a prime minister)

A ministration

The active practice and education of the minister of a particular religion or faith.

The clergy of nonapostolic Protestant churches.

Work of a spiritual or charitable nature.

accusative/instrumental plural of ministr

Source: wiktionary.org