rota

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Chiefly British A roll call or roster of names.
• noun Chiefly British A round or rotation of duties.
• noun Roman Catholic Church A tribunal of prelates that serves as an ecclesiastical court.

from The Century Dictionary.

• noun A wheel.
• noun A course, turn, or routine.
• noun A roll or list; a school-roll, a military roll, a roll of jurors, or the like, showing the order of call or of turns of duty.
• noun In music, same as round, or any variety of piece in which repeats are frequent.
• noun A reliquary or other receptacle of circular form, ornamented with a cross whose arms reach the outer rim so that the whole resembles a wheel.
• noun [capitalized] An ecclesiastical tribunal in the Roman Catholic Church, having its seat at the papal court.
• noun Same as rote, in either of its senses.

from the GNU version of the Collaborative International Dictionary of English.

• noun An ecclesiastical court of Rome, called also Rota Romana, that takes cognizance of suits by appeal. It consists of twelve members.
• noun (Eng. Hist.) A short-lived political club established in 1659 by J.Harrington to inculcate the democratic doctrine of election of the principal officers of the state by ballot, and the annual retirement of a portion of Parliament.
• noun (Mus.) A species of zither, played like a guitar, used in the Middle Ages in church music; -- written also rotta.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun music A kind of zither, played like a guitar, used in the Middle Ages in church music.
• noun UK A schedule that allocates some task, responsibility or (rarely) privilege between a set of people according to a (possibly periodic) calendar.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun (Roman Catholic Church) the supreme ecclesiastical tribunal for cases appealed to the Holy See from diocesan courts
• noun a roster of names showing the order in which people should perform certain duties