eiderdowns is eiderdown's Plural Form

eiderdown

US [ˈaɪdərˌdaʊn]
UK [ˈaɪdə(r)ˌdaʊn]
  • n.鸭绒被;绒鸭的绒毛
  • Web羽毛被
Plural Form:eiderdowns  
n.
1.
鸭绒被
2.
绒鸭的绒毛