Meaning of jackleg

jack•leg

Pronunciation: ( jak'leg"), [key]
— Chiefly South Midland and Southern U.S. Chiefly South Midland and Southern U.S.
—adj.
  1. unskilled or untrained for one's work; amateur: a jackleg electrician.
  2. unscrupulous or without the accepted standards of one's profession: a jackleg lawyer.
  3. makeshift; temporary.
—n.
  1. an unskilled or unscrupulous itinerant worker or practitioner.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.