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Meaning of cornicle

cor•ni•cle

Pronunciation: (kôr'ni-kul), [key]
— n.
  1. any of various small, horn-shaped processes, esp. one of a pair of tubes at the posterior end of the abdomen of aphids, from which a waxy fluid is emitted.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.