Source : Webster's Revised Unabridged Dictionary (1913)

Raven \Rav"en\, v. t. [imp. & p. p. {Ravened}; p. pr. & vb. n.
   {Ravening}.] [Written also ravin, and ravine.]
   1. To obtain or seize by violence. --Hakewill.

   2. To devoir with great eagerness.

            Like rats that ravin down their proper bane. --Shak.

Ravening \Rav"en*ing\, n.
   Eagerness for plunder; rapacity; extortion. --Luke xi. 39.

Ravening \Rav"en*ing\, a.
   Greedily devouring; rapacious; as, ravening wolves. --
   {Rav"en*ing*ly}, adv.

Source : WordNet®

ravening
     adj 1: living by preying on other animals especially by catching
            living prey; "a predatory bird"; "the rapacious wolf";
            "raptorial birds"; "ravening wolves"; "a vulturine
            taste for offal" [syn: {predatory}, {rapacious}, {raptorial},
             {vulturine}, {vulturous}]
     2: excessively greedy and grasping; "a rapacious divorcee on
        the prowl"; "ravening creditors"; "paying taxes to
        voracious governments" [syn: {rapacious}, {voracious}]
     3: devouring or craving food in great quantities; "edacious
        vultures"; "a rapacious appetite"; "ravenous as wolves";
        "voracious sharks" [syn: {edacious}, {esurient}, {rapacious},
         {ravenous}, {voracious}, {wolfish}]