[1] : The Collaborative International Dictionary of English v.0.48

source \source\, n. oe. sours, of. sourse, surse, sorse, f.
   source, fr. of. sors, p. p. of of. sordre, surdre, sourdre,
   to spring forth or up, f. sourdre, fr. l. surgere to lift or
   raise up, to spring up. see surge, and cf. souse to
   plunge or swoop as a bird upon its prey.
   1. the act of rising; a rise; an ascent. obs.
      1913 webster

            therefore right as an hawk upon a sours
            up springeth into the air, right so prayers . . .
            maken their sours to goddes ears two. --chaucer.
      1913 webster

   2. the rising from the ground, or beginning, of a stream of
      water or the like; a spring; a fountain.
      1913 webster

            where as the poo out of a welle small
            taketh his firste springing and his sours.
                                                  --chaucer.
      1913 webster

            kings that rule
            behind the hidden sources of the nile. --addison.
      1913 webster

   3. that from which anything comes forth, regarded as its
      cause or origin; the person from whom anything originates;
      first cause.
      1913 webster

            this source of ideas every man has wholly in
            himself.                              --locke.
      1913 webster

            the source of newton's light, of bacon's sense.
                                                  --pope.
      1913 webster

   syn: see origin.
        1913 webster
see also:
surge souse origin 

[2] : WordNet (r) 2.0

source
     n 1: the place where something begins, where it springs into
          being; "the italian beginning of the renaissance";
          "jupiter was the origin of the radiation"; "pittsburgh
          is the source of the ohio river"; "communism's russian
          root" syn: beginning, origin, root, rootage
     2: a person who supplies information syn: informant
     3: a publication or a passage from a publication that is
        referred to; "he carried an armful of references back to
        his desk"; "he spent hours looking for the source of that
        quotation" syn: reference
     4: a document or organization from which information is
        obtained; "the reporter had two sources for the story"
     5: a facility where something is available
     6: anything that provides inspiration for later work syn: seed,
         germ
     7: someone who originates or causes or initiates something; "he
        was the generator of several complaints" syn: generator,
         author
     8: technology a process by which energy or a substance enters
        a system; "a heat source"; "a source of carbon dioxide"
        ant: sink
     9: anything a person or animal or plant or substance in which
        an infectious agent normally lives and multiplies; "an
        infectious agent depends on a reservoir for its survival"
        syn: reservoir
     v 1: get a product from another country or business; "she
          sourced a supply of carpet"; "they are sourcing from
          smaller companies"
     2: specify the origin of; "the writer carefully sourced her
        report"
see also:
beginning origin root rootage informant reference 
seed germ generator author sink 
reservoir 

[3] : Moby Thesaurus II by Grady Ward, 1.0

119 moby thesaurus words for "source":
   adviser, ambition, announcer, annunciator, antecedent, aspiration,
   author, authority, authorship, basis, begetter, beginning,
   birthplace, bonanza, calling, cause, channel, commencement,
   communicant, communicator, conception, consideration, cornucopia,
   creator, dawn, dawning, derivation, determinant, documentation,
   enlightener, expert witness, font, fount, fountain, fountainhead,
   genesis, goal, gold mine, gossipmonger, grapevine, grass roots,
   ground, guiding light, guiding star, head, headstream, headwater,
   headwaters, ideal, inception, informant, information center,
   information medium, informer, inspiration, intention, interviewee,
   lode, lodestar, mainspring, matter, mine, monitor, mother, motive,
   mouthpiece, newsmonger, notifier, onset, opening, origin, original,
   origination, originator, outset, parent, paternity, press,
   principle, provenance, provenience, public relations officer,
   publisher, quarry, radical, radio, radix, reason, reporter,
   resource, rise, rising, riverhead, root, roots, rootstock, sake,
   score, source of supply, spokesman, spring, staple, start,
   starting, stem, stock, taproot, television, teller, tipster, tout,
   ulterior motive, vein, vocation, well, wellhead, wellspring,
   whence, witness

[4] : Jargon File (4.3.1, 29 Jun 2001)

source n. very common in reference to software, `source' is
   invariably shorthand for `source code', the preferred human-readable and
   human-modifiable form of the program. this is as opposed to object code,
   the derived binary executable form of a program. this shorthand readily
   takes derivative forms; one may speak of "the sources of a system" or of
   "having source".

[5] : The Free On-line Dictionary of Computing (27 SEP 03)

source
     
        source code
     
     
see also:
source code 

Source >> S Words
Source, definition of term: Source
source_pag1.html

Source Code >> S Words
Source Code, definition of term: Source Code
source+code_pag1.html