The Collaborative International Dictionary of English v.0.48:

Beget \Be*get"\, v. t. [imp. Begot, (Archaic) Begat; p. p.
   Begot, Begotten; p. pr. & vb. n. Begetting.] [OE.
   bigiten, bigeten, to get, beget, AS. begitan to get; pref.
   be- + gitan. See Get, v. t. ]
   1. To procreate, as a father or sire; to generate; --
      commonly said of the father.
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            Yet they a beauteous offspring shall beget.
                                                  --Milton.
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   2. To get (with child.) [Obs.] --Shak.
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   3. To produce as an effect; to cause to exist.
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            Love is begot by fancy.               --Granville.
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The Collaborative International Dictionary of English v.0.48:

Begotten \Be*got"ten\,
   p. p. of Beget.
   [1913 Webster]

WordNet (r) 3.0 (2006):

begotten
    adj 1: (of offspring) generated by procreation; "naturally
           begotten child"