Deacon (noun)

1. A member of the lowest order of the clergy, ranking below a priest in the Roman Catholic, Anglican, and Greek Orthodox churches.
2. A lay assistant to a priest in some Christian churches.
3. A person who has been ordained for a special ministry of service in some Christian churches.

Origin:

Middle english deken, from old english diacon, from late latin diaconus, from greek diakonos "servant, deacon", from dia- "through" + konis "dust, ashes" (in reference to the custom of dusting the floor of a church with ashes), from pie root *kei- "to lie, to set".

Examples:

1. The deacon delivered the homily at the Sunday service.
2. The deacon assisted the priest during the mass.
3. The deacon was responsible for the care of the poor and the sick in the parish.
4. The deacon was appointed as the leader of the youth group.
5. The deacon was an important member of the church council.