Source : Webster's Revised Unabridged Dictionary (1913)

Apus \A"pus\, n. [NL., fr. Gr. ?. See {Apode}, n.] (Zo["o]l.)
   A genus of fresh-water phyllopod crustaceans. See
   {Phyllopod}.

Source : WordNet®

Apus
     n 1: a constellation in the polar region of the southern
          hemisphere near Octans
     2: type genus [syn: {genus Apus}]