One who communicates.
A person who receives (or is allowed to receive) the elements (i.e., bread and wine) of the sacrament of Holy Communion. (Compare also these terms: communion, Communion, Lord's Supper, Mass, Eucharist, Divine Liturgy.)
Communicating.
A person who takes part in dialogue or conversation.
A man in the middle of the line in a minstrel show who questions the end men and acts as leader.
A decree of a court.
An interlocutory judgement or sentence.