Definition of Powder down. Meaning of Powder down. Synonyms of Powder down

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Definition of Powder down

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, grinding, or triturating, or into which it falls by decay; dust. Grind their bones to powder small. --Shak. 2. An explosive mixture used in gunnery, blasting, etc.; gunpowder. See Gunpowder. Atlas powder, Baking powder, etc. See under Atlas, Baking, etc. Powder down (Zo["o]l.), the peculiar dust, or exfoliation, of powder-down feathers. Powder-down feather (Zo["o]l.), one of a peculiar kind of modified feathers which sometimes form patches on certain parts of some birds. They have a greasy texture and a scaly exfoliation. Powder-down patch (Zo["o]l.), a tuft or patch of powder-down feathers. Powder hose, a tube of strong linen, about an inch in diameter, filled with powder and used in firing mines. --Farrow. Powder hoy (Naut.), a vessel specially fitted to carry powder for the supply of war ships. They are usually painted red and carry a red flag. Powder magazine, or Powder room. See Magazine, 2. Powder mine, a mine exploded by gunpowder. See Mine. Powder monkey (Naut.), a boy formerly employed on war vessels to carry powder; a powder boy. Powder post. See Dry rot, under Dry. Powder puff. See Puff, n.

Meaning of Powder down from wikipedia

- 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...
- initially classed as a member of the clade Ardeae because of the presence of powder down, similarities in plumage colour and internal anatomy, the colour of the...
- retracted, not outstretched. They are also one of the bird groups that have powder down. Some members of this group nest colonially in trees, while others, notably...
- the closely related herons, spoonbills and ibises; they also lack the powder down that those groups use to clean off fish slime. Bill-clattering is an...
- Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of...
- Metal powder is a metal that has been broken down into a powder form. Metals that can be found in powder form include aluminium powder, nickel powder, iron...
- preening. Rather, powder down feathers are spread across the body. These have a tendency to disintegrate, and the powder, akin to tal**** powder, helps maintain...
- relation to the Gruiformes proper. Notably, the kagu and mesites also have powder down. An indeterminate fossil eurypygid has been do****ented from the Green...
- to 25 grains (1 to 2 g) of black powder down the barrel, followed by ramming a patched lead ball down onto the powder, being very careful to leave no air...
- typically have more down feathers following their autumn moult. There are three types of down: natal down, body down and powder down. drumming A form of...