Source : Webster's Revised Unabridged Dictionary (1913)

Practicable \Prac"ti*ca*ble\, a. [LL. practicare to act,
   transact, fr. L. practicus active, Gr. ?: cf. F. practicable,
   pratiquer to practice. See {Practical}.]
   1. That may be practiced or performed; capable of being done
      or accomplished with available means or resources;
      feasible; as, a practicable method; a practicable aim; a
      practicable good.

   2. Capable of being used; passable; as, a practicable weapon;
      a practicable road.

   {Practicable breach} (Mil.), a breach which admits of
      approach and entrance by an assailing party.

   Syn: Possible; feasible. -- {Practicable}, {Possible}. A
        thing may be possible, i. e., not forbidden by any law
        of nature, and yet may not now be practicable for want
        of the means requisite to its performance. --
        {Prac"ti*ca*ble*ness}, n. -- {Prac"ti*ca*bly}, adv.

Source : WordNet®

practicable
     adj 1: usable for a specific purpose; "an operable plan"; "a
            practicable solution" [syn: {operable}]
     2: capable of being done with means at hand and circumstances
        as they are [syn: {feasible}, {executable}, {viable}, {workable}]