What does "scoter" mean?

Any one of several species of northern sea ducks of the genus Melanitta.

What is a synonym for "scoter"?

Common synonyms include: duck, scooter, sea duck, waterfowl.

/ˈskoʊ.tɚ/ noun

noun ·Rare ·Advanced level

Noun

1
Any one of several species of northern sea ducks of the genus Melanitta.
"When I went birdwatching, I saw lots of scoters."
2
large black diving duck of northern parts of the Northern Hemisphere wordnet

"When I went birdwatching, I saw lots of scoters."

Uncertain.