eider
Eider (noun) means a large seaduck that lines its nest with soft down plucked from its own body. Example: “A pair of eiders bobbed close to the rocky shore.”
How to use eider
Learner’s notesIn plain EnglishA seaduck known for the soft down it plucks to line its nest.
It is a plain, everyday term used mainly in birdwatching and nature writing.
Remember that eider refers to the duck itself, while eiderdown usually refers to the soft feathers it produces.
Trace the full origin ↓Fill the gap
Can you complete this real example?
A pair of _____ bobbed close to the rocky shore.
Etymology
The word traces back to Icelandic æðar, a form of æðr, and most likely reached English through Swedish eider, itself from an older North Germanic root.