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| mer·gan·ser [ mər gánssər ] (plural mer·gan·sers) |
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| Definition: |
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fish-eating diving duck: a fish-eating diving duck with a crested head and a long beak notched like a saw blade. Genus Mergus.
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| [Mid-17th century. < modern Latin< Latin mergus "diver" + anser "goose"] |
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