sloughing
 坍陷; 滑坍
 Slough, v. i. [imp. & p. p. Sloughed p. pr. & vb. n. Sloughing.] Med. To form a slough; to separate in the form of dead matter from the living tissues; -- often used with off, or away; as, a sloughing ulcer; the dead tissues slough off slowly.
 Slough·ing n. Zool. The act of casting off the skin or shell, as do insects and crustaceans; ecdysis.
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 sloughing
      n : the process whereby something is shed [syn: shedding]