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plural ceres
(ornithology) A fleshy, waxy area at the base of the upper beak in certain birds. quotations
The cere is the fleshy spot just above the beak where the nostrils, or nares, are located. In some species, like the parakeet, the cere is prominent; in others, the cere is covered by feathers. Both the cere and the nares should be clean […]
2021, Nikki Moustaki, Parrots For Dummies, John Wiley & Sons, page 182
third-person singular simple present ceres, present participle cering, simple past and past participle cered
(transitive) To wax; to cover or close with wax. quotations examples
a strong twisted Thread cered
1676, Richard Wiseman, Severall Chirurgicall Treatises, London: […] E. Flesher and J. Macock, for R[ichard] Royston […], and B[enjamin] Took, […]