Source : Webster's Revised Unabridged Dictionary (1913)

Skilled \Skilled\, a.
   Having familiar knowledge united with readiness and dexterity
   in its application; familiarly acquainted with; expert;
   skillful; -- often followed by in; as, a person skilled in
   drawing or geometry.

Source : WordNet®

skilled
     adj : having or showing or requiring special skill; "only the most
           skilled gymnasts make an Olympic team"; "a skilled
           surgeon has many years of training and experience"; "a
           skilled reconstruction of her damaged elbow"; "a
           skilled trade" [ant: {unskilled}]