Definition of merganser
: any of various fish-eating diving ducks (especially genus Mergus) with a slender bill hooked at the end and serrated along the margins and usually a crested head — see common merganser
Recent Examples of merganser from the Web
Some attractions are a snapping turtle that likes to sun itself on a log, a variety of fish in the lake and such fish-eating birds as herons, kingfishers and mergansers.
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