Yes, deacon is in the scrabble dictionary

Deacon Definition

noun

A cleric ranking just below a priest in the Anglican, Eastern Orthodox, and Roman Catholic churches.

A Protestant layperson who assists the minister in various functions.

Used as a title prefixed to the surname of such a person: Deacon Brown.

One of the laymen elected by a church with congregational polity to serve in worship, in pastoral care, and on administrative committees.

A Mormon in the lowest grade of the Aaronic priesthood .