Source : Webster's Revised Unabridged Dictionary (1913)

Practice \Prac"tice\, v. t. [imp. & p. p. {Practiced}; p. pr. &
   vb. n. {Practicing}.] [Often written practise, practised,
   practising.]
   1. To do or perform frequently, customarily, or habitually;
      to make a practice of; as, to practice gaming. ``Incline
      not my heart . . . practice wicked works.''

Practiced \Prac"ticed\, a. [Often written practised.]
   1. Experienced; expert; skilled; as, a practiced marksman.
      ``A practiced picklock.'' --Ld. Lytton.

   2. Used habitually; learned by practice.

Source : WordNet®

practiced
     adj 1: having or showing knowledge and skill and aptitude; "adept
            in handicrafts"; "an adept juggler"; "an expert job";
            "a good mechanic"; "a practiced marksman"; "a
            proficient engineer"; "a lesser-known but no less
            skillful composer"; "the effect was achieved by
            skillful retouching" [syn: {adept}, {expert}, {good},
            {proficient}, {skillful}, {skilful}]
     2: skillful after much practice [syn: {practised}]