powder-down patch
noun1
Biology, Natural sciences, Ornithology A patch or tuft of powder-down feathers.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
Biology, Natural sciences, Ornithology A patch or tuft of powder-down feathers.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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