| eider | (noun) duck of the Northern Hemisphere much valued for the fine soft down of the females | Synonyms: eider duck |
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| eiderdown | (noun) down of the eider duck | - |
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| (noun) a soft quilt usually filled with the down of the eider | Synonyms: continental quilt, duvet |
| oreide | (noun) alloy of copper and tin and zinc; used in imitation gold jewelry | Synonyms: oroide |
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| seidel | (noun) a glass for beer | - |
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| ureide | (noun) any compound, of general formula R-CO-NH-CO-NH2 or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea. | - |
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