The Collaborative International Dictionary of English v.0.48:

Movable \Mov"a*ble\, n.; pl. Movables.
   1. An article of wares or goods; a commodity; a piece of
      property not fixed, or not a part of real estate;
      generally, in the plural, goods; wares; furniture. [Also
      spelled moveable.]
      [1913 Webster]

            Furnished with the most rich and princely movables.
                                                  --Evelyn.
      [1913 Webster]

   2. (Rom. Law) Property not attached to the soil.
      [1913 Webster]

   Note: The word is not convertible with personal property,
         since rents and similar incidents of the soil which are
         personal property by our law are immovables by the
         Roman law. --Wharton.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Movable \Mov"a*ble\, a. [Cf. OF. movable. See Move.]
   1. Capable of being moved, lifted, carried, drawn, turned, or
      conveyed, or in any way made to change place or posture;
      susceptible of motion; not fixed or stationary; as, a
      movable steam engine. [Also spelled moveable.]

   Syn: transferable, transferrable, transportable.
        [1913 Webster]

   2. Changing from one time to another; as, movable feasts, i.
      e., church festivals, the date of which varies from year
      to year.
      [1913 Webster]

   Movable letter (Heb. Gram.), a letter that is pronounced,
      as opposed to one that is quiescent.

   Movable feast (Ecclesiastical), a holy day that changes
      date, depending on the lunar cycle. An example of such a
      day is Easter.
      [1913 Webster +PJC]

WordNet (r) 3.0 (2006):

movable
    adj 1: (of personal property as opposed to real estate) can be
           moved from place to place (especially carried by hand)
    2: capable of being moved or conveyed from one place to another
       [syn: movable, moveable, transferable, transferrable,
       transportable]
    n 1: personal as opposed to real property; any tangible movable
         property (furniture or domestic animals or a car etc) [syn:
         chattel, personal chattel, movable]

Moby Thesaurus II by Grady Ward, 1.0:

79 Moby Thesaurus words for "movable":
   able to adapt, accessible, adaptable, adjustable, alterable,
   alterative, amenable, assignable, changeable, changeful, checkered,
   communicable, conductive, consignable, contagious, conveyable,
   ever-changing, expressable, flexible, floating, fluid, impartable,
   impermanent, impressionable, influenceable, interchangeable,
   kaleidoscopic, mailable, malleable, many-sided, metamorphic,
   metathetic, mobile, modifiable, motile, moveable, moving, mutable,
   nonuniform, open, open-minded, permutable, persuadable,
   persuasible, pervious, plastic, pliable, pliant, portable,
   portative, protean, proteiform, receptive, removable, resilient,
   responsive, roving, rubbery, suasible, suggestible, supple,
   susceptible, swayable, transferable, transfusable, transient,
   transitory, transmissible, transmissive, transmittable,
   transportable, transportative, transposable, unfixed, unstable,
   unsteadfast, unsteady, variable, weak