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.]

(Zo["o]l.) A European bird of the genus Upupa (U. epops), having a beautiful crest, which it can erect or depress at pleasure. Called also hoop, whoop. The name is also applied to several other species of the same genus and allied genera.

Source: Webster's Revised Unabridged Dictionary (1913)