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To scratch or otherwise strip off the skin by physical means.
tr.v. excori·ated, excori·ating, excori·ates
a. To censure strongly; denounce: "preparing to excoriate him for his insufficient preparations" (Neil Bascomb).
b. To criticize (something) harshly: "After excoriating the vapid culture of movie-star worship ... he's ended up at that trough" (Maureen Dowd).
2. To tear, scrape, or wear off (the skin).
To scratch or otherwise denude the skin by physical means.