Akademik

whooper swan
noun
common Old World swan noted for its whooping call
Syn: ↑whooper, ↑Cygnus cygnus
Derivationally related forms: ↑whoop (for: ↑whooper)
Hypernyms: ↑swan
Member Holonyms: ↑Cygnus, ↑genus Cygnus

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a common, Old World swan, Cygnus cygnus, distinguished by a yellow patch at the base of its bill, noted for its whooping cry.
[1875-80]

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whooper swan noun
A swan (Cygnus cygnus) with a whooping call, common in N Europe and Asia
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Main Entry:whoop

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whooper swan,
an Old-World swan that has a whooping call.

Useful english dictionary. 2012.