Dittrich's plug

[dĭtrĭks]
n.
  1. Any of the minute, grayish, ill-smelling masses of bacteria and fatty acid crystals in the sputum in pulmonary gangrene and fetid bronchitis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.