The Collaborative International Dictionary of English v.0.48:

Corrigible \Cor"ri*gi*ble\ (k?r"r?-j?-b'l), a. [LL. corribilis,
   fr. L. corrigere to correct: cf. F. corrigible. See
   Correrct.]
   [1913 Webster]
   1. Capable of being set right, amended, or reformed; as, a
      corrigible fault.
      [1913 Webster]

   2. Submissive to correction; docile. "Bending down his
      corrigible neck." --Shak.
      [1913 Webster]

   3. Deserving chastisement; punishable. [Obs.]
      [1913 Webster]

            He was taken up very short, and adjudged corrigible
            for such presumptuous language.       --Howell.
      [1913 Webster]

   4. Having power to correct; corrective. [Obs.]
      [1913 Webster]

            The . . . .corrigible authority of this lies in our
            wills.                                --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

corrigible
    adj 1: capable of being corrected or set right; "a corrigible
           defect"; "a corrigible prisoner" [ant: incorrigible]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "corrigible":
   ameliorable, amendable, controllable, correctable, curable,
   domesticable, domitable, emendable, fixable, governable,
   handleable, improvable, manageable, manipulable, manipulatable,
   medicable, mendable, perfectible, reclaimable, recoverable,
   rectifiable, recyclable, redeemable, remediable, repairable,
   reparable, restorable, restrainable, retrievable, reversible,
   tamable, untroublesome