a relatively low-ranking minister in a church of Christianity, especially a minister who ranks below a priest (in the Roman Catholic, Eastern Orthodox, and Anglican churches);
e.g. In a church, the deacon is still considered to be an ordained member of the clergy.
(noun)
an officer in a church who is appointed to offer assistance to the minister in some way, especially with non-religious duties such as administrative activities or charity work;
e.g. The fundraiser was organized by the deacon, with the proceeds going towards the church's fund.