Webster's 1828 Dictionary
GOOSANDER
n.A migratory fowl of the genus Mergus, the diver or plunger; called also merganser.
Webster's 1913 Dictionary
GOOSANDER
Goos "an `der, n. Etym: [OE. gossander, a tautological word formed fr. goose + gander. Cf. Merganser. ] (Zoöl.)
Defn: A species of merganser (M. merganser ) of Northern Europe and America; -- called also merganser, dundiver, sawbill, sawneb, shelduck, and sheldrake. See Merganser.
New American Oxford Dictionary
goosander
goos an der |go͞oˈsandər ɡuˈsændər | ▶noun ( pl. same or goosanders ) British term for common merganser (see merganser ). ORIGIN early 17th cent.: probably from goose + -ander as in dialect bergander ‘shelduck ’ (the coloring of the male common merganser resembling that of the shelduck ).
Oxford Dictionary
goosander
goosander |guːˈsandə | ▶noun ( pl. same or goosanders ) a large Eurasian and North American merganser (diving duck ), the male of which has a dark green head and whitish underside. ●Mergus merganser, family Anatidae. North American name: common merganser. ORIGIN early 17th cent.: probably from goose + -ander as in dialect bergander ‘shelduck ’ (the colouring of the male goosander resembling that of the shelduck ).
The Wordsmith Dictionary