noun
duck
DUHK/dʌk/
A waterbird with a broad bill and webbed feet.
The duck stands by the water with broad bill and webbed feet visible.

Etymology
Old English duce is presumed to have meant literally 'a ducker,' naming the bird for dipping or diving into water. The connection with that action is probable rather than certain.
In context
How many different animal sounds can you make? I like to quack like a duck, or moo like a cow.
More examples
- Several ducks swam toward the bank.
- A duck settled among the reeds.
- They watched the duck paddle away.
Forms
duck · ducks
duckling noun — A young duck.
Similar words
- waterfowl
- The broader category of birds adapted to water.