swans-down

CIDE DICTIONARY

swans-down, n.

The down, or fine, soft feathers, of the swan, used on various articles of dress. [1913 Webster]
A fine, soft, thick cloth of wool mixed with silk or cotton; a sort of twilled fustian, like moleskin. [1913 Webster]

Swan's-down cotton. See Cotton flannel, under Cotton.

For further exploring for "swans-down" in Webster Dictionary Online

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