Definition of mountain duck in English:

mountain duck

noun

  • 1Australian. The Australian shelduck, Tadorna tadornoides, which has a chestnut breast and a white ring around the neck.

  • 2Originally NZ. A blue-grey New Zealand duck, Hymenolaimus malacorhynchos, found chiefly on streams and rivers in mountainous areas.

Origin

Early 18th century; earliest use found in Atlas Geographus. From mountain + duck.

Pronunciation

mountain duck

/ˈmaʊnt(ɪ)n ˌdʌk/