Decani

Webster's Dictionary

(a.) Used of the side of the choir on which the dean's stall is placed; decanal; - correlative to cantoris; as, the decanal, or decani, side.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

(or Deans), an order of men instituted in the 9th century, to assist the bishops in the inspection of their dioceses. Seven of the most enlightened men of the congregation were appointed, under the name of decani, to take charge of the rest. (See Dean).