noun
birds of southeast Asia and East Indies differing from true swifts in having upright crests and nesting in trees
• Syn: ↑crested swift
• Hypernyms: ↑apodiform bird
• Member Holonyms: ↑Hemiprocnidae, ↑family Hemiprocnidae
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noun : any of several atypical swifts of the genus Hemiprocne of India and the East Indies which are often isolated in a distinct family, which have unusually soft plumage and are mostly crested, and in which the sexes are dissimilar and the young differ markedly from adults
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any of several birds of the family Hemiprocnidae, of southeast Asia and the East Indies, related to the true swifts but differing in having erectile crests and the habit of perching in trees. Also, tree-swift. Also called crested swift.
Useful english dictionary. 2012.