Meaning of the word eiderdown in English

What does eiderdown mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

eiderdown

US /ˈaɪ.dɚ.daʊn/
UK /ˈaɪ.də.daʊn/

Noun

a thick covering for the top of a bed, filled with soft feathers or warm material:

Example:
She snuggled beneath the eiderdown.