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(ī`dər), river, 117 mi (188 km) long, rising S of Kiel, N Germany, and flowing N to the Kiel Canal before turning west and meandering to the North Sea at Tönning. It is navigable for most of its length. The Eider's lower course is regulated by locks; part of its upper course is followed by the Kiel Canal. The river separates Schleswig from Holstein.


see duckduck,
common name for wild and domestic waterfowl of the family Anatidae, which also includes geese and swans. It is hunted and bred for its meat, eggs, and feathers. Strictly speaking, duck refers to the female and drake to the male.
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, eider duck
any of several sea ducks of the genus Somateria, esp S. mollissima, and related genera, which occur in the N hemisphere. The male has black and white plumage, and the female is the source of eiderdown
References in periodicals archive ?
And the common eider is a sea duck waterfowl managers know little about.
Naturally, the Spectacled Eider is focused on conservation of wildlife, and his lessons address living creatures, human and otherwise.
Airborne ALS and MS capability of tidal and Outer Elbe and the Eider.
Another Grand National entrant, Alpha Victor, looks the one to be on in the Eider Chase (2.
Let's hope one of the five Eider competitors entered in the Grand National goes on to fly the Eider flag like Comply or Die did and run well or even win the blue riband event in April.
Maurice Phelan's grey ten-year-old has been lightly-raced in recent seasons - he has run only seven times since his Eider success under Denis O'Regan three years ago.
Lavelle said: "The Eider has been the plan since Warwick as four miles round a big galloping track like Newcastle will suit him.
For quickness sake, King Eider will appeal to those of you who like Mumford & Sons' upbeat take on folk but as the album suggests, there's something deeper with King Eider.
He's in a three-mile novice chase at Chepstow and the Eider at Newcastle," said Vaughan.
Kate Walton's 12-year-old has been placed in two runnings of the Eider Chase, and another crack at that four-mile marathon is on the cards in a month's time.
The classic eider recipe suggests making a stock from a bottle of good red wine, peppers and onions; simmering the fillets in it for four hours - then throwing away the fillets and sipping the stock.
And none is tougher than North America's largest--the common eider.