powder down


powder down
modified down feathers that continually crumble at the tips, producing a fine powder that forms a bloom on the plumage of certain birds, as pigeons and herons.

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Universalium. 2010.

Look at other dictionaries:

  • Powder down — is a special type of down feathers. They occur in a few groups of apparently unrelated birds and thus are probably evolutionary homoplasies. These down feathers differ from the usual down as they are exceptionally fine and produce a dust between… …   Wikipedia

  • Powder down — Powder Pow der, n. [OE. poudre, pouldre, F. poudre, OF. also poldre, puldre, L. pulvis, pulveris: cf. pollen fine flour, mill dust, E. pollen. Cf. {Polverine}, {Pulverize}.] 1. The fine particles to which any dry substance is reduced by pounding …   The Collaborative International Dictionary of English

  • powder down — noun : modified down feathers in some birds (as herons, parrots, tinamous, frogmouths) that grow continuously and disintegrate at the ends * * * modified down feathers that continually crumble at the tips, producing a fine powder that forms a… …   Useful english dictionary

  • powder-down — …   Useful english dictionary

  • Powder-down feather — Powder Pow der, n. [OE. poudre, pouldre, F. poudre, OF. also poldre, puldre, L. pulvis, pulveris: cf. pollen fine flour, mill dust, E. pollen. Cf. {Polverine}, {Pulverize}.] 1. The fine particles to which any dry substance is reduced by pounding …   The Collaborative International Dictionary of English

  • Powder-down patch — Powder Pow der, n. [OE. poudre, pouldre, F. poudre, OF. also poldre, puldre, L. pulvis, pulveris: cf. pollen fine flour, mill dust, E. pollen. Cf. {Polverine}, {Pulverize}.] 1. The fine particles to which any dry substance is reduced by pounding …   The Collaborative International Dictionary of English

  • Down feather — The down of birds is a layer of fine feathers found under the tougher exterior feathers. Very young birds are clad only in down. Powder down is a specialized type of down found only in a few groups of birds. Down is a fine thermal insulator and… …   Wikipedia

  • Powder — Pow der, n. [OE. poudre, pouldre, F. poudre, OF. also poldre, puldre, L. pulvis, pulveris: cf. pollen fine flour, mill dust, E. pollen. Cf. {Polverine}, {Pulverize}.] 1. The fine particles to which any dry substance is reduced by pounding,… …   The Collaborative International Dictionary of English

  • Powder hose — Powder Pow der, n. [OE. poudre, pouldre, F. poudre, OF. also poldre, puldre, L. pulvis, pulveris: cf. pollen fine flour, mill dust, E. pollen. Cf. {Polverine}, {Pulverize}.] 1. The fine particles to which any dry substance is reduced by pounding …   The Collaborative International Dictionary of English

  • Powder hoy — Powder Pow der, n. [OE. poudre, pouldre, F. poudre, OF. also poldre, puldre, L. pulvis, pulveris: cf. pollen fine flour, mill dust, E. pollen. Cf. {Polverine}, {Pulverize}.] 1. The fine particles to which any dry substance is reduced by pounding …   The Collaborative International Dictionary of English


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