The Collaborative International Dictionary of English v.0.48:

Ravin \Rav"in\, Ravine \Rav"ine\ (r[a^]v"'n), n. [See 2d
   Raven.]
   Food obtained by violence; plunder; prey; raven. "Fowls of
   ravyne." --Chaucer.
   [1913 Webster]

         Though Nature, red in tooth and claw
         With ravine, shrieked against his creed. --Tennyson.
   [1913 Webster] Ravin

The Collaborative International Dictionary of English v.0.48:

Raven \Rav"en\, v. i.
   To prey with rapacity; to be greedy; to show rapacity.
   [Written also ravin, and ravine.]
   [1913 Webster]

         Benjamin shall raven as a wolf.          --Gen. xlix.
                                                  27.
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The Collaborative International Dictionary of English v.0.48:

Raven \Rav"en\ (r[a^]v"'n), n. [OF. ravine impetuosity,
   violence, F. ravine ravine. See Ravine, Rapine.] [Written
   also ravin, and ravine.]
   1. Rapine; rapacity. --Ray.
      [1913 Webster]

   2. Prey; plunder; food obtained by violence.
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The Collaborative International Dictionary of English v.0.48:

Ravin \Rav"in\, Ravine \Rav"ine\, v. t. & i.
   See Raven, v. t. & i.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ravine \Ra*vine"\ (r[.a]*v[=e]n"), n. [F., a place excavated by
   a torrent, a ravine, fr. ravir to snatch or tear away, L.
   rapere; cf. L. rapina rapine. See Ravish, and cf. Rapine,
   Raven prey.]
   1. A torrent of water. [Obs.] --Cotgrave.
      [1913 Webster]

   2. A deep and narrow hollow, usually worn by a stream or
      torrent of water; a gorge; a mountain cleft.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ravine
    n 1: a deep narrow steep-sided valley (especially one formed by
         running water)