[doun] 
| 1. | the soft, first plumage of many young birds. |
| 2. | the soft under plumage of birds as distinct from the contour feathers. |
| 3. | the under plumage of some birds, as geese and ducks, used for filling in quilts, clothing, etc., chiefly for warmth. |
| 4. | a growth of soft, fine hair or the like. |
| 5. | Botany.
|
| 6. | filled with down: a down jacket. |
