The Collaborative International Dictionary of English v.0.48:

Rota \Ro"ta\, n. (Mus.)
   A species of zither, played like a guitar, used in the Middle
   Ages in church music; -- written also rotta.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rota \Ro"ta\, n. [L. rota wheel. The name is said to allude to
   the design of the floor of the room in which the court used
   to sit, which was that of a wheel. See Rotary.]
   1. An ecclesiastical court of Rome, called also Rota
      Romana, that takes cognizance of suits by appeal. It
      consists of twelve members.
      [1913 Webster]

   2. (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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Rota
    n 1: (Roman Catholic Church) the supreme ecclesiastical tribunal
         for cases appealed to the Holy See from diocesan courts
    2: a roster of names showing the order in which people should
       perform certain duties

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "rota":
   account, agenda, annals, beadroll, cadastre, calendar, catalog,
   census, census report, checklist, checkroll, chronicle,
   correspondence, docket, documentation, dramatis personae,
   head count, history, honor roll, inventory, jury list, jury panel,
   letters, lineup, list, memorial, muster, muster roll, nose count,
   order of business, pipe roll, poll, program, property roll,
   questionnaire, record, recording, register, registry, relic,
   remains, returns, roll, roll call, rolls, roster, scroll, table,
   tax roll, token, trace, vestige