'Hoopoo' definitions:

Definition of 'hoopoo'

noun

Any of several crested Old World birds with a slender downward-curved bill [syn: hoopoe, hoopoo]

From: GCIDE

Hoopoe \Hoop"oe\, Hoopoo \Hoop"oo\, n. [So called from its cry; cf. L. upupa, Gr. ?, D. hop, F. huppe; cf. also G. wiedenhopf, OHG. wituhopfo, lit., wood hopper.] (Zool.) A European bird of the genus Upupa (Upupa epops), having a beautiful crest, which it can erect or depress at pleasure, and a slender down-curving bill. Called also hoop, whoop. The name is also applied to several other species of the same genus and allied genera.