The Collaborative International Dictionary of English v.0.48:

Devour \De*vour"\, v. t. [imp. & p. p. Devoured; p. pr. & vb.
   n. Devouring.] [F. d['e]vorer, fr. L. devorare; de + vorare
   to eat greedily, swallow up. See Voracious.]
   1. To eat up with greediness; to consume ravenously; to feast
      upon like a wild beast or a glutton; to prey upon.
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            Some evil beast hath devoured him.    --Gen. xxxvii.
                                                  20.
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   2. To seize upon and destroy or appropriate greedily,
      selfishly, or wantonly; to consume; to swallow up; to use
      up; to waste; to annihilate.
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            Famine and pestilence shall devour him. --Ezek. vii.
                                                  15.
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            I waste my life and do my days devour. --Spenser.
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   3. To enjoy with avidity; to appropriate or take in eagerly
      by the senses.
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            Longing they look, and gaping at the sight,
            Devour her o'er with vast delight.    --Dryden.

   Syn: To consume; waste; destroy; annihilate.
        [1913 Webster]

WordNet (r) 3.0 (2006):

devouring
    adj 1: (often followed by `for') ardently or excessively
           desirous; "avid for adventure"; "an avid ambition to
           succeed"; "fierce devouring affection"; "the esurient
           eyes of an avid curiosity"; "greedy for fame" [syn:
           avid, devouring(a), esurient, greedy]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "devouring":
   a hog for, acquisitive, all-devouring, appetite, avaricious, avid,
   bottomless, cannibalism, carnivorism, carnivority, carnivorousness,
   chewing, consumption, coveting, covetous, cropping, deglutition,
   devourment, dieting, dining, eating, epulation, esurient, feasting,
   feeding, gluttonous, gluttony, gobbling, grabby, grasping, grazing,
   greedy, herbivorism, herbivority, herbivorousness, hoggish, hunger,
   ingestion, insatiable, insatiate, licking, limitless, manducation,
   mastication, mercenary, messing, miserly, money-hungry, money-mad,
   munching, nibbling, nutrition, omnivorism, omnivorous,
   omnivorousness, omophagy, overgreedy, pantophagy, pasture,
   pasturing, pecking, piggish, quenchless, rapacious, ravening,
   ravenous, regalement, relishing, rumination, savoring, slakeless,
   sordid, swinish, tasting, unappeasable, unappeased, unquenchable,
   unsated, unsatisfied, unslakeable, unslaked, vegetarianism, venal,
   voracious, wolfing