Swan's-down /(?)/

Swan's·-down

Swan's-down

n.
  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.

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