To feel a peculiar irritation or tingling of the skin, producing an inclination to scratch the part so affected.Hence To experience a provoking, teasing, or tingling desire to do or to get something.n. A tingling sensation of irritation in the skin, produced by disease (see def. 2) or in any other way.n. An inflammation of the human skin, caused by the presence of a minute mite, Sarcoptes scabiei (see itch-mite), presenting papules, vesicles, and pustules, and accompanied with great itching; scabies.n. Hence An uneasy longing or propensity; a teasing or tingling desire: as, an itch for praise; an itch for scribbling.n. See the qualifying words.