from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A congenital deformity characterized by a vertical cleft or pair of clefts in the upper lip, with or without involvement of the palate.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun teratology harelip

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a congenital cleft in the middle of the upper lip


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