The Collaborative International Dictionary of English v.0.48:

Curriculum \Cur*ric"u*lum\ (k?r-r?k"?-l?m), n.; pl. E.
   Curriculums (-l?mz), L. Curricula (-l[.a]). [L. See
   Curricle.]
   [1913 Webster]
   1. A race course; a place for running.
      [1913 Webster]

   2. A course; particularly, a specified fixed course of study,
      as in a university.
      [1913 Webster]

WordNet (r) 3.0 (2006):

curriculum
    n 1: an integrated course of academic studies; "he was admitted
         to a new program at the university" [syn: course of
         study, program, programme, curriculum, syllabus]

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "curriculum":
   academic specialty, area, classical education, core curriculum,
   course, course of study, discipline, elective, field,
   general education, general studies, humanities, liberal arts,
   major, minor, proseminar, quadrivium, refresher course,
   scientific education, seminar, specialty, study, subdiscipline,
   subject, technical education, trivium