Deacon/ˈdiːkən/ Definition 1 of 3Pro Tip 1/3Hierarchy Significance Understand 'deacon' signifies a lower rank than a priest in church hierarchies. He was proud to serve as a deacon before becoming a priest. Pro Tip 2/3Church Services 'Deacon' often participates in church services, performing specific roles. The deacon shared a moving sermon at Sunday's service. Pro Tip 3/3Community Role Deacons also have responsibilities towards church members and the community. The deacon organized a charity event for the local community.