ăpūs, pŏdis, m., = ἄπους (footless),
a kind of swallow , said to have no feet , the black martin : Hirundo apus, Linn.; Plin. 10, 39, 55, § 144.
·noun A genus of fresh-water phyllopod crustaceans. ·see <<Phyllopod>>. ...
Webster's Dictionary of the English Language