swan`s-down; swans-down

swan`s-down; swans-down is a   Noun

Definition:

[1] The down, or fine, soft feathers, of the swan, used on various articles of dress.

[2] A fine, soft, thick cloth of wool mixed with silk or cotton; a sort of twilled fustian, like moleskin. Swan`s-down cotton. See Cotton flannel, under Cotton.

Synonyms: