The Collaborative International Dictionary of English v.0.48:

Compilation \Com"pi*la"tion\, n. [L. compilatio: cf. F.
   compilation.]
   1. The act or process of compiling or gathering together from
      various sources.
      [1913 Webster]

   2. That which is compiled; especially, a book or document
      composed of materials gathering from other books or
      documents.
      [1913 Webster]

            His [Goldsmith's] compilations are widely
            distinguished from the compilations of ordinary
            bookmakers.                           --Macaulay.
      [1913 Webster]

WordNet (r) 3.0 (2006):

compilation
    n 1: something that is compiled (as into a single book or file)
         [syn: compilation, digest]
    2: the act of compiling (as into a single book or file or list);
       "the job of compiling the inventory took several hours" [syn:
       compilation, compiling]