n :  any of several minute parasitic mites that burrow into the skin of humans and animals and cause itch : esp  :  a mite of any of several varieties of a species of the genus Sarcoptes(S. scabiei) that causes the itch, is about ¹/₆₀ inch (0.4 millimeter) long, and has a round-ovate body and 3-jointed legs and mandibles resembling minute needles .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.