swansdown

[ swonz-doun ]
/ ˈswɒnzˌdaʊn /
|

noun

the down or under plumage of a swan, used for trimming, powder puffs, etc.
a fine, soft, thick woolen cloth.
a sturdy cotton flannel with a thickly napped face.

Origin of swansdown

First recorded in 1600–10; swan1 + 's1 + down2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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