The Collaborative International Dictionary of English v.0.48:

Transferable \Trans*fer"a*ble\ (?; 277), a. [Cf. F.
   transf['e]rable.]
   1. Capable of being transferred or conveyed from one place or
      person to another.
      [1913 Webster]

   2. Negotiable, as a note, bill of exchange, or other evidence
      of property, that may be conveyed from one person to
      another by indorsement or other writing; capable of being
      transferred with no loss of value; as, the stocks of most
      public companies are transferable; some tickets are not
      transferable.
      [1913 Webster]

WordNet (r) 3.0 (2006):

transferable
    adj 1: capable of being moved or conveyed from one place to
           another [syn: movable, moveable, transferable,
           transferrable, transportable]
    2: legally transferable to the ownership of another; "negotiable
       bonds" [syn: assignable, conveyable, negotiable,
       transferable, transferrable]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "transferable":
   alienable, assignable, bequeathable, communicable, conductive,
   consignable, contagious, conveyable, devisable, expressable,
   heritable, impartable, inheritable, interchangeable, mailable,
   metathetic, movable, negotiable, portable, portative, removable,
   transfusable, transmissible, transmissive, transmittable,
   transportable, transportative, transposable