Definition of powder-down in English:

powder-down

noun ˈpaʊdədaʊn

Ornithology

A down feather which grows continuously and disintegrates into a powder at the tips instead of being moulted (more fully "powder-down feather"); such feathers collectively, which occur in patches on certain birds, as herons, toucans, parrots, and bowerbirds, the powder being used in cleaning the plumage.

Origin

Mid 19th century; earliest use found in Proceedings of the Zoological Society of London. From powder + down, after German Puder-dune from Puder (from French poudre) + Dune, variant of Daune.

Definition of powder-down in US English:

powder-down

nounˈpaʊdədaʊn

Ornithology

A down feather which grows continuously and disintegrates into a powder at the tips instead of being moulted (more fully "powder-down feather"); such feathers collectively, which occur in patches on certain birds, as herons, toucans, parrots, and bowerbirds, the powder being used in cleaning the plumage.

Origin

Mid 19th century; earliest use found in Proceedings of the Zoological Society of London. From powder + down, after German Puder-dune from Puder (from French poudre) + Dune, variant of Daune.

词汇	powder-down
释义	Definition of powder-down in English: powder-down noun ˈpaʊdədaʊn Ornithology A down feather which grows continuously and disintegrates into a powder at the tips instead of being moulted (more fully "powder-down feather"); such feathers collectively, which occur in patches on certain birds, as herons, toucans, parrots, and bowerbirds, the powder being used in cleaning the plumage. Origin Mid 19th century; earliest use found in Proceedings of the Zoological Society of London. From powder + down, after German Puder-dune from Puder (from French poudre) + Dune, variant of Daune. Definition of powder-down in US English: powder-down nounˈpaʊdədaʊn Ornithology A down feather which grows continuously and disintegrates into a powder at the tips instead of being moulted (more fully "powder-down feather"); such feathers collectively, which occur in patches on certain birds, as herons, toucans, parrots, and bowerbirds, the powder being used in cleaning the plumage. Origin Mid 19th century; earliest use found in Proceedings of the Zoological Society of London. From powder + down, after German Puder-dune from Puder (from French poudre) + Dune, variant of Daune.
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