swan's-downalso swans·down (swŏnz′doun′)
1. The soft down of a swan.
2. A soft woolen or wool and silk fabric.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
swan's-down[ˈswɒnzˌdaʊn] n → piumino (di cigno)
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995