Origin of ApusModL, the Old World swift (genus name) ; from Classical Greek apous, literally , footless: see apodal
Origin of ApusLatin ap&umacron;s, a kind of swallow, from Greek apous, without feet, sand martin : a-, without; see a–1 + pous, foot; see ped- in Indo-European roots.
- plural form of APU
Named by Dutch explorers Pieter Dirkszoon Keyser and Frederick de Houtman between 1595 and 1597. From Latin apūs, from Ancient Greek ἄπους (apous, “sand martin”), from ἀ- (a-, “not”) + πούς (pous, “foot”) (the birds rarely show their feet).