n 1  :  an uneasy irritating sensation in the upper surface of the skin usu. held to result from mild stimulation of pain receptors  2  :  a skin disorder accompanied by an itch : esp  :  a contagious eruption caused by an itch mite of the genus Sarcoptes (S. scabiei) that burrows in the skin and causes intense itching itch vb itch*i*ness n itchy adj 
 
 
 
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