The Collaborative International Dictionary of English v.0.48:

Anthology \An*thol"o*gy\, n. [Gr. ?, fr. 'anqolo`gos flower
   gathering; 'a`nqos flower + le`gein to gather.]
   1. A discourse on flowers. [R.]
      [1913 Webster]

   2. A collection of flowers; a garland. [R.]
      [1913 Webster]

   3. A collection of flowers of literature, that is, beautiful
      passages from authors; a collection of poems or epigrams;
      -- particularly applied to a collection of ancient Greek
      epigrams.
      [1913 Webster]

   4. (Gr. Ch.) A service book containing a selection of pieces
      for the festival services.
      [1913 Webster]

WordNet (r) 3.0 (2006):

anthology
    n 1: a collection of selected literary passages

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "anthology":
   Festschrift, album, ana, analects, aquarium, beauties, body,
   book of verse, canon, chrestomathy, clippings, collectanea,
   collected works, collection, compilation, complete works, corpus,
   cuttings, data, delectus, excerpta, excerpts, extracts,
   florilegium, flowers, fragments, fund, garden, garland, gleanings,
   holdings, library, menagerie, miscellanea, miscellany, museum,
   omnibus, photograph album, poesy, poetic works, quotation book,
   raw data, scrapbook, symposium, treasure, zoo