Definitions

from The Century Dictionary.

  • noun In ornithology, the integument of the upper mandible of a bird, exclusive of the dertrotheca.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Zoöl.) The sheath of the upper mandible of a bird.

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

  • noun The horny covering of the upper part of a bird's beak

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

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Examples

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