Definitions

from The Century Dictionary.

  • noun In ornithology, a feather of partly downy structure, possessing a pennaceous stem and a plumulaceous web. See feather.

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

  • noun (Zoöl.) A feather which has a plumelike web, with the shaft of an ordinary feather.

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

  • noun zoology A feather which has a plumelike web, with the shaft of an ordinary feather.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

semi- +‎ plume

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Examples

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