swan's-downalso swans·down (swŏnz′doun′)
1. The soft down of a swan.
2. A soft woolen or wool and silk fabric.
1. (Textiles) the fine soft down feathers of a swan, used to trim powder puffs, clothes, etc
2. (Textiles) a thick soft fabric of wool with silk, cotton, or rayon, used for infants' clothing, etc
3. (Textiles) a cotton fabric with a heavy nap