The Collaborative International Dictionary of English v.0.48:

Moralize \Mor"al*ize\ (m[o^]r"al*[imac]z), v. t. [imp. & p. p.
   Moralized (m[o^]r"al*[imac]zd); p. pr. & vb. n.
   Moralizing (m[o^]r"al*[imac]*z[i^]ng).] [Cf. F. moraliser.]
   1. To apply to a moral purpose; to explain in a moral sense;
      to draw a moral from.
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            This fable is moralized in a common proverb.
                                                  --L'Estrange.
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            Did he not moralize this spectacle?   --Shak.
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   2. To furnish with moral lessons, teachings, or examples; to
      lend a moral to.
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            While chastening thoughts of sweetest use, bestowed
            By Wisdom, moralize his pensive road. --Wordsworth.
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   3. To render moral; to correct the morals of.
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            It had a large share in moralizing the poor white
            people of the country.                --D. Ramsay.
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   4. To give a moral quality to; to affect the moral quality
      of, either for better or worse.
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            Good and bad stars moralize not our actions. --Sir
                                                  T. Browne.
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WordNet (r) 3.0 (2006):

moralizing
    n 1: indulgence in moral pronouncements; the exposition (often
         superficially) of a particular moral code; "his constant
         moralizing drove me mad" [syn: moralizing,
         moralization, moralisation]