whoop·er /ˈh(w)upɚ/
Whoop·er n. One who, or that which, whooops.
Woopher swan. Zool. See the Note under Swan.
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whooper
n 1: rare North American crane having black-and-white plumage and
a trumpeting call [syn: whooping crane, Grus
americana]
2: common Old World swan noted for its whooping call [syn: whooper
swan, Cygnus cygnus]