n.
Pronunciation: ( ˌ )m ə r- ' gan(t)-s ə r
Function: noun
Etymology: New Latin, from Latin mergus, a waterfowl (fr. mergere ) + anser goose ― more at GOOSE
Date: 1668
: any of various fish-eating diving ducks (esp. genus Mergus ) with a slender bill hooked at the end and serrated along the margins and usually a crested head
merganser